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Instructions for Authors > For Authors and Reviewers > Instructions for Authors

1. Categories of Publications
2. Editorial Policies for Authors
3. Manuscript Preparation
4. Editorial and Peer Review Process
5. Publication Processing Charges
6. Editorial and Peer Review Process
7. Author’s Manuscript Check List

Clinical and Experimental Otorhinolaryngology (CEO), the official English language journal of the Korean Society of Otorhinolaryngology-Head and Neck Surgery publishes original contributions valuable to the advancement of medical diagnosis and treatment.

Published four times per year in March, June, September and December, the journal reports clinical and other investigations relating to radiology and its allied sciences, publishing full-length original papers, reviews, pictorial essays, and letters to the editor.

The CEO has on online submission and peer review system. Manuscripts should be submitted online at http://submit.e-ceo.org and the instructions on the site should be closely followed. Authors may submit manuscripts and tract their progress to final decision. Reviewers can download manuscripts and submit their reports to the Editors.

Authors who are unable to submit online should contact the Editorial Office:

* Editor-in-Chief: Jong-Lyel Roh, M.D., Ph.D.
   E-mail: editor.eceo@gmail.com

Editorial Office, Clinical and Experimental Otorhinolaryngology
103-307 Park Tower officetel, Yongsan-dong 5-ga, Yongsan-gu, Seoul 04385, Korea
Tel: 82-2-711-9091
Fax: 82-2-3487-6603

Manuscripts for submission to CEO should be prepared according to the following instructions. CEO follows the Uniform Requirements for Manuscripts Submitted to Biomedical Journals: Writing and Editing for Biomedical Publication (http://www.icmje.org/) if not otherwise described below.

In a covering letter, please identify the person responsible for editorial correspondence (address, telephone number, fax number and e-mail address). The covering letter must be signed by the corresponding author on behalf of all authors, also include details of any previous submission. It is also useful to give any information to the Editor-in-Chief to support the submission (e.g., original or confirmatory data, relevance, topicality) or whether any text, figures or tables can be omitted. Receipt of all contributions is acknowledged immediately, with a reference number for inquires.

Categories of Publications

The CEO publishes original articles, reviews, correspondence and abstracts of the original articles awarded by the Korean Society of Otorhinolaryngology-Head and Neck Surgery and the Korean Bronchoesophagological Society.

Original articles are papers containing results of basic and clinical investigations, which are sufficiently well documented to be acceptable to critical readers. Maximum length of manuscript is 3,500 words (exclusive of the title page and abstract), 30 references and a total 10 images.

Review articles describe concise review on subjects of importance to medical researchers. Maximum length of manuscript is 4,500 words. The review articles are accepted after editorial evaluation.

Correspondence is a comment from readers for a published article and a reply from the authors. All correspondence should be not longer than two pages in length.

Editorial is an invited perspective in otorhinolaryngology-head and neck surgery, dealing on very active areas of research, fresh insights and debates.

Abstracts of the original articles, awarded by affiliated societies of the Korean Society of Otorhinolaryngology-Head and Neck Surgery and the Korean Bronchoesophagological Society are attached to the end of each volume whether or not published in other journals.

Editorial Policies for Authors

As stated in the Uniform Requirements, credit for authorship requires substantial contributions to (a) the conception and design or analysis and interpretation of the data, and (b) the drafting of the article or critical revision for important intellectual content. Any change in authorship after submission must be approved in writing by all authors.

Conflict of interest

A conflict of interest may exist when an author (or the author’s institution or employer) has financial or personal relationships that could inappropriately influence (or bias) the author’s decisions, work, or manuscript.
Corresponding author of an article is asked to let the Editor-in-Chief know potential conflict of interest possibly influencing their interpretation of data. Potential conflict of interest is applied even when the authors are confident that their judgments have not been influenced in the manuscript. Such conflicts may be financial supports or connections to pharmaceutical companies, political pressure from interest groups, or academic problems.
The Editor-in-Chief will decide whether the information of the conflict should be included in the published paper. Before publishing such information, the Editor-in-Chief will consult with the corresponding author.
In particular, all sources of funding for a research should be explicitly stated. CEO asks referees to let its Editor-in-Chief know of any conflict of interest before reviewing a particular manuscript.


For clinical trials, details of ethical committee approval and the type of informed consent should be stated. Patients’ and volunteers’ names, initials, and hospital numbers should not be used. We endorse the principles embodied in the Declaration of Helsinki and expect that all investigations involving human materials have been performed in accordance with these principles. For animal experiment, “the Guiding Principles in the Care and Use of Animals” approved by the American Physiological Society have to be observed.

Previous publication

No substantial part of the manuscript may have been or may be published elsewhere. This restriction does not apply to abstracts or press reports published in connection with scientific meetings. For advice on previous or simultaneous publication, contact the Editorial Office.


Articles published in CEO are open-access, distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Upon acceptance of an article, authors will be asked to transfer copyright. This transfer will ensure the widest possible dissemination of information. A letter will be sent to the corresponding author confirming receipt of the manuscript. A form facilitating transfer of copyright will be provided.
If excerpts from other copyrighted works are included, the author(s) must obtain written permission from the copyright owners and credit the source(s) in the article.
Requests may also be completed online: http://www.e-ceo.org

Alteration in proof

CEO provides the corresponding author with galley proofs for their correction. Corrections should be kept to minimum. The Editor retains the prerogative to question minor stylistic alterations and major alterations that might affect the scientific content of the paper. Fault found after the publication is a responsibility of the authors. We urge our contributors to proofread and their accepted manuscript very carefully. The corresponding author may be contacted by the Editorial Office, depending on the nature of correction in proof. If the proof is not returned to the Editorial Office within 48 hours, it may be necessary to reschedule the paper for a subsequent issue.

For the policies on the research and publication ethics not stated in this instructions, ‘Good Publication Practice Guidelines for Medical Journals (http://kamje.or.kr/publishing_ethics.html)’ or ‘Guidelines on good publication (http://www.publicationethics.org.uk/guidelines)’ can be applied.

Manuscript Preparation

CEO will consider manuscripts prepared in accordance with the “Uniform Requirements for Manuscripts Submitted to Biomedical Journals.” Authors are advised to read these guidelines, especially when deciding on who qualifies as an author.


- Format: Write in English with double line-spacing on one side of single A4 sheets with a margin of at least 2.5 cm on every side.

- Page Number: Number pages consecutively in the upper righthand corner, beginning with the title page.

- Units of Measurement: Authors should express all measurements in conventional units, with Systeme International (SI) units given in parentheses throughout the text. Figures and tables should use conventional units, with conversion factors given in legends or footnotes. In accordance with the Uniform Requirements, however, manuscripts containing only SI units will not be returned for that reason.

- Drug Names: Generic names should be used. When proprietary brands are used in research, include the brand name and the name of the manufacturer in parentheses after the first mention of the generic name in the Methods section.

- Abbreviations: Except for units of measurement, abbreviations are strongly discouraged. Except for units of measurement, the first time an abbreviation appears, it should be preceded by the words for which it stands. Manuscripts containing research data, generally follow the order: Title page, Abstract, Text, Conflict of Interest, Acknowledgments, References, Tables, and Figure legends. Start each section at the top of a new page, and number all the pages.

- Highlight: All papers include 3-5 short highlights presenting short summary or findings in the next of title page: each highlight includes less than 90 characters including space.

Title page
This should contain the title of an article, full names of authors and institutional affiliation(s). If several authors, and institutions are listed, they should be clearly indicated with which department and institution each author is affiliated. In a separate paragraph, address for correspondence, including the name of corresponding author, degree, address (institutional affiliation, city, zip-code and country), telephone and fax numbers, and e-mail address) should be given. Infor-mation concerning sources of financial support should be placed as a footnote. A running title, 50 characters or less including blank, should not be declarative or interrogative sentences.

Structured abstract & keywords
The abstract should be concise, less than 300 words, and describe concisely, in a paragraph. Use the following subheads: Objectives: State the objective or question addressed by the research. Any hypothesis should also be stated. Methods: Describe the basic experimental design of the study. The number of subjects and how they were selected should be provided. Results: State the main results of the study. Conclusions: State the conclusions of the study that are directly supported by the data, along with the clinical implications or applicability.

Abbreviations, if needed, should be kept to absolute minimum with proper identifications. But Abstracts for case report carry the same restrictions of word count. Abstract is not required for editorials or for correspondence.
Up to ten keywords should be listed at the bottom of abstract to be used as index terms. For the selection of keywords, refer Medical Sub-ject Heading (MeSH) in Index Medicus, or in internet site, http:// www.nlm.nih.gov/mesh/MBrowser.html.

Organize the manuscript into four main headings: Introduction, Materials and Methods, Results, and Discussion. Other descriptive headings and subheadings may be used if appropriate.

Brief background, references to the most pertinent papers generally enough to inform readers, and relevant findings of others are described. The specific question to which the authors’ particular investigation is studied should be also described.

Materials and Methods
Explanation of the experimental methods should be concise and sufficient for repetition by other qualified investigators. Procedures that have been published previously should not be described in detail. However, new or significant modifications of previously published procedures need full descriptions. The sources of special chemicals or preparations should be given along with their location (name of company, city and state, and country). Method of statistical analyses and criteria of significance level should be described.

This part should be presented logically using text, table and illustrations. Excessive repetition of table or figure contents should be avoided.

The data should be interpreted concisely without repeating materials already presented in the results section. Speculation is permitted, but it must be supported by the presented data of authors and be well founded.

Conflict of interest
At the end of the text, under a subheading “Conflict of interest statement” all authors must disclose any financial and personal relationships with other people or organizations that could inappropriately influence their work.

All persons who have made substantial contribution, but who are not eligible as authors are named in acknowledgments.

Citation of references in the text should be made by giving consecutive number in parenthesis. They should be listed in the order of citation in the text with consecutive number in this separate section.

Style for papers in periodicals is: name and initials of all authors(.) full title of article(.) journal name(.) year mon(;)volume(:)first page(-)last page numbers(.).

Style for chapter of a book is: name and initials of all authors (.) title of the chapter(.) (In: )editor of the book(, editor.) title of the book(.) edition(.) place(:) publisher(;) year(.) (p.) first page(-)last page(.).

All other references should be listed as shown in “NLM Format, http://www.nlm.nih.gov/citingmedicine.” Authors are responsible for the accuracy and completeness of their references and correct text citations. Papers in press may be listed among the references with the journal name and tentative year of publication. ‘Unpublished data’ and ‘Personal communications’ are not allowed. Accepted but unpublished papers (but not submitted manuscripts) can be referenced as ‘in press’.

List all authors up to six. If more than six, list the first six and add “et al.”

Examples for an article in a journal [1, 2] or a entire book [3] or for a book chapter [4] would be:

  1. Petitti DB, Crooks VC, Buckwalter JG, Chiu V. Blood pressure levels before dementia. Arch Neurol. 2005 Jan;62(1):112-6.
  2. Hallal AH, Amortegui JD, Jeroukhimov IM, Casillas J, Schulman CI, Manning RJ, et al. Magnetic resonance cholangiopancreatography accurately detects common bile duct stones in resolving gallstone pancreatitis. J Am Coll Surg. 2005 Jun;200(6):869-75.
  3. Eyre HJ, Lange DP, Morris LB. Informed decisions: the complete book of cancer diagnosis, treatment, and recovery. 2nd ed. Atlanta: American Cancer Society; 2002. 768 p.
  4. Otado JA, Akukwe C, Collins JW Jr. Disparate African American and white infant mortality rates in the United States. In: Livingston IL, editor. Praeger handbook of Black American health: policies and issues behind disparities in health. 2nd ed. Westport (CT): Praeger; 2004. p. 355-68.

Tables must be cited in the order in which they appear in the text using Arabic numerals. The table’s legend may include any pertinent notes and must include definitions of all abbreviations and acronyms that have been used in the table. Tables submitted with multiple parts will be renumbered. The significance of results should be indicated by appropriate statistical analysis. For footnotes use the following symbols, in sequence: *, †, ‡, §, ||, ¶, **, ††, ‡‡. All units of measurement and concentration should be designated. Exponential terminology is discouraged.

Figures must be cited in the order they appear in the text using Arabic numerals. Figure legends should appear within the document in a separate section after the references. Figure legends are required for all article types and should be double-spaced in the manuscript. All relevant and explanatory information extraneous to the actual figure, including figure part labels, footnotes, abbreviations, acronyms, arrows, and levels of magnification in insets, should be defined in the legend text. Figure legends must not exceed 100 words per figure.

Black and white illustrations will be published without charge. Authors will be charged for all color illustrations. The Publisher will provide, upon request, an estimate of the cost of color artwork.

Digital art needs to be created/scanned and saved and submitted as a TIFF (tagged image file format), an EPS (encapsulated postscript), or PPT (Power Point) files. Electronic photographs (radiographs, CT/ MRI scans, and scanned images) must have a resolution of at least 300 dpi. Line art must have a resolution of at least 1,200 dpi (dots per inch). If fonts are used in the artwork, they must be converted to paths or outlines or they must be embedded in the files. Color images must be created/scanned and saved and submitted as CMYK files. Cite figures consecutively in the text, and number them in the order in which they are discussed.

How to Submit a Manuscript

The CEO has on online submission and peer review system. Manuscripts should be submitted online at http://submit.e-ceo.org and the instructions on the site should be closely followed. Authors may submit manuscripts and tract their progress to final decision.

Text: To facilitate the review process, manuscripts must be in Microsoft Word format (.doc) or Rich Text Format (.rtf). Use basic fonts such as Arial, Courier, Helvetica, Times, or Times New Roman no smaller than 10 points. Special or mathematical characters and Greek letters, which are not on a standard keyboard, must be created using the Symbol font. Manuscripts should be submitted as a single document with the information in the following order; abbreviated title page, abstract, text, appendix, references, tables (embedded), and captions.

Illustrations: Do not reveal your identity anywhere in the document. Full title page, acknowledgements, and supplemental material should be submitted as separate files. All figure parts relating to one patient should have the same figure number. In the case of multiple prints bearing the same number, use English letters after the numerals to indicate the correct order.

Log on to http://submit.e-ceo.org/ if you do not have an account, click on the “Create Account” link. If you have an account, but do not know your password, click the “Forgot Your Password?” link. Otherwise, enter your Use ID and password into the boxes provided, and click. At the welcome screen, click on “Submit a Manu-script”. And then, click “New Submissions” link to submit a new manuscript and follow steps 1-5.

Step 1. Manuscript Type, Title and Abstract
Select manuscript type, and enter your title and abstract into the appropriate boxes. You can cut and paste from your document. If you need to insert a special character, click the “Special Characters” button. If you are submitting a manuscript that does not require an Abstract, please type N/A in the Abstract box.

Step 2. Authors and Institutions
Enter your co-authors’ information in the boxes under “Add a New Author”, then click “Add to My Authors”.

Step 3. File Upload
The manuscript file should not include author’s name or name of organization where the author works. Upload and select the correct file designation for each. All images should be inserted into a Power-Point file. Acceptable file formats are pdf, doc, and ppt, and each files should not be any bigger than 10 MB in size.

Step 4. Preview
Review the information in the Preview chart for correctness; make changes as needed.
Confirmation of your submission will be noted. Please note if you have not completed a required step, you will not be able to submit your manuscript.

Step 5. Submit

Manuscript Checklist for Revised Manuscripts
Use this worksheet as a guide during revision process. Please note that all components described in this list must be returned to the CEO Editorial Office, regardless of whether or not revisions were made to a specific component of the revision manuscript.

Date: MS # (if known):
MS Title:

Clean Version

  • Double-space the entire manuscript, including all components of manuscript.
  • If references, tables, or figures are moved, added, or deleted during the revision process, please renumber them to reflect such changes so that all tables, references and figures are cited in a numerical order.

Annotated Version

  • Underline all revisions.
  • Track changes will not be accepted, because the annotation may be lost in the PDF conversion process.
  • If you cannot produce an electronic copy of the annotated version, a printed copy may be faxed to the CEO Editorial Office at 82-2- 711-9091.

Full Title Page

  • Include the full first and last names, academic degrees (MD, PhD, etc.), and affiliations for all authors.
  • Provide the full address (including street address and zip code), telephone number, fax number, and e-mail address of the corresponding author.

Blinded Title Page

  • Include only the title of the manuscript.


  • Adhere to CEO’s reference format.

Figure Legend

  • All figure captions (legends) should appear collectively on one or more pages, separately from the text, and each caption also should be entered as images are uploaded.


  • Prepare any revised illustrations that have been requested, and upload only illustrations that have been requested (All requested figures must be attached even if there are no changes or revisions to the figures).
  • Figure labels should touch the margin of the item being labeled. If possible, digital figure files should be supplied as TIFF files with labels positioned on layers. Do not flatten image or merge layers.

Point-by-Point Response Letter

  • Please provide a letter that specifies how each of the comments of the Editor and the Reviewer(s) were addressed. A point-by-point response to the reviewers’ comments must be included either in the submission page rebuttal section or an attached file.

* All of the above information is checked and complete with this manuscript.

Publication Processing Charges

For unsolicited manuscripts, a part of the publication processing charge is requested from the corresponding author. After acceptance, the submitted paper will be sent out to publishing company, and then the company can ask the authors to pay the net publishing expenses, if needed. It is mainly up to the number of color figures.

Editorial and Peer Review Process

CEO reviews all the received materials. One copy of the manuscript is reviewed for English. The remaining two manuscripts are sent to two most relevant investigators for review of the contents. The editor selects peer referees by recommendation of the Editorial Board members or from the specialist database owned by the Editorial Board.

If decided necessary, review for statistics may be additionally requested. For review, names and their affiliations of the authors are blinded.

Acceptance of the manuscript is decided, based on the critiques and recommended decision of the referees. A referee’s decision is made as “acceptance without revision”, “acceptance after minor revision”, “review after revision” and “rejection”. If there is marked discrepancy in the decisions between two referees or in opinions between the author and referee(s), the Editor may send the manuscript to another referee for additional comments and recommended decision. Three repeated decisions of “review after revision” are regarded as “rejection”. The reviewed manuscripts are returned back to the corresponding author with comments and recommended revisions. Names and decisions of the referees are masked. A final decision on acceptance or rejection for publication is forwarded to the corresponding author from the Editorial Office.

The usual reasons of rejection are insufficient originality, serious scientific flaws, poor quality of illustrations, or absence of a message that might be important to readers. The peer review process takes usually four to eight weeks after the manuscript submission.

Revisions are usually requested to take account of criticism and comments made by referees.

Failure to resubmit the revised manuscript within two months is regarded as a withdrawal. The corresponding author must indicate clearly what alterations have been made in response to the referees’ comments point by point. Acceptable reasons should be given for noncompliance with any recommendation of the referees.

Author’s Manuscript Check List
  • Double-spaced typing in A4 size paper with 10 or 12-point font and preparing in an electronic file made by Microsoft (MS) Word.
  • Sequence of Title page, Abstract and keywords, Text (introduction, materials and methods, results, discussion), acknowledgments, references, tables and figure legends. All pages should be numbered consecutively starting from the title page.
  • Title page with article title, authors’ full name(s) and affiliation, address for correspondence (including telephone, fax numbers and e-mail address), running title (50 characters or less including blank), and footnotes if any.
  • Abstract in structured format within 300 words, and keywords as in MeSH.
  • All table and figure numbers found in the text.
  • References listed in proper format. Check that all references listed in the references section are cited in the text and vice versa.
  • A covering letter stating the material is not published previously, and will not be submitted for publication elsewhere, and stating conflicts of interest of all listed authors, if any.
  • Highlight: All papers include 3-5 short highlights presenting short summary or findings in the next of title page: each highlight includes less than 90 characters including space.
  • Authors should submit the Author Disclosure Form and Copyright Assignment Form signed by all authors, simultaneoulsy with the submission of their manuscript.

Editorial Office
Korean Society of Otorhinolaryngology-Head and Neck Surgery
103-307 Park Tower officetel, Yongsan-dong 5-ga, Yongsan-gu, Seoul 04385, Korea
TEL: +82-2-711-9091   FAX: +82-2-3487-6603   E-mail: editor.eceo@gmail.com
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