The manuscript must be double-spaced with 3 cm margins on A4 sized paper. Please number the pages consecutively, beginning from the title page.
1. Title page
The title, together with each author’s full name and institutional affiliation(s) should be typed on the title page in the journal
's house style. A running title should be added if the title exceeds 12 words. The corresponding author’s name, full address, telephone and facsimile numbers, and e-mail address should also be included, if necessary, in a footnote.
Provide a short descriptive statement regarding the contributions of each co-author (e.g., study concept and design; data acquisition; data analysis and interpretation; drafting of the manuscript; critical revision of the manuscript for important intellectual content; statistical analysis; obtained funding; administrative, technical, or material support; study supervision).
Authors of original scientific papers must supply a structured abstract of no more than 250 words, incorporating the following headings: Background/Aims, Methods, Results, and Conclusions. Nonstandard abbreviations, references, or footnotes should not be used. A maximum of five key words should appear below the abstract, using MeSH terms.
3. Main text
1) Original articles
All clinical research papers that involve human or animal subjects must be accompanied by evidence of an Institutional Review Board or Ethics Committee Review. The maximum word count is 3,500 words. References should be critical and relevant to the manuscript, figure legends, tables, and illustrations. All original manuscripts must include the following:
• Introduction - Summarize the rationale for the study and outline pertinent background material. The introduction should not contain either results or conclusions.
• Materials and Methods - Materials and Methods —Describe your methods in sufficient detail to enable another investigator to repeat the work. Include the name and location (city, state, country) of any manufacturer mentioned in the text. Outline any statistical methods used. Either describe the ethical guidelines used for human or animal study or provide evidence of the approval granted by an institutional human research review committee or animal welfare committee. Describe in detail any hazardous procedures or chemicals used, and the precautions observed.
• Results - Present the results in a logical sequence in the text. Avoid presenting the same data in different forms, for example through tables or illustrations not include aspects of the discussion in the results section.
• Discussion - The discussion should demonstrate how any results obtained relate to the original hypotheses advanced in the introduction. This explanation may include an evaluation of the methodology and of the relationship of new information to the existing corpus of knowledge in that field. Data presented in the results section should not be reiterated here.
2) Case reports
The format should include an introduction, case report, and discussion; the format is similar to that of an original article. The maximum word count is 1,500 words.
3) Brief communications
Brief communications are short articles describing clinical or experimental findings of importance or great advancement. A brief communication should be organized in the same way as a case report, and should be limited to 1,500 words. The total number of tables and figures should not exceed two.
4) Imaging and issues
This section presents unusual, classic, challenging, or informative images in the field of gastroenterology. Submissions will be reviewed by the Imaging and Issues Coordinating Editors. The format should include a title page, case description, discussion, references, and images. The case description should be no longer than one page, and should include the following: a brief history, findings during the physical exam, laboratory results, the clinical course, and the outcome. The case images and all of the labels within the images must be described. The discussion and references should be no longer than one page. The discussion should include important features of the images, the differential diagnosis, and the clinical significance. No more than five references should be included. References must include definitive studies and pertinent reviews. No more than two high quality figures will be accepted.
5) Letters to the editor
welcomes readers’ comments on articles published recently in the Journal
or on topics of interest.
Substantive reviews of systematic and clinical topics in gastroenterology and liver disease will be considered for publication. Both types of manuscript will be peer reviewed prior to consideration for publication. An abstract must be included.
Editorials express opinions on current topics of interest or provide comments on papers published elsewhere in the same issue. Editorials are usually solicited by the Editor. Tables and/or figures may be included. Editorials should have fewer than five authors and should not exceed 1,000 words. No subdivisions (such as an Introduction, Materials and Methods, Results, or Discussion) are required. A maximum of 10 references may be included.
4. Conflicts of interest
Any potential conflict of interest relevant to the article must be described.
A brief acknowledgement of persons who made a genuine contribution may be included. Authors are responsible for obtaining written permission to use any copyrighted text and/or illustration. All funding related to the work should be specifically acknowledged.
Please number references serially in the text in order of citation, with the numbers printed in superscript. List all authors if there are fewer than seven. List the first three authors followed by“et al.” if there are seven or more authors. Journal
titles should be abbreviated in the style of Index
Medicus. For more on references, please refer to the National Library of Medicine (NLM) Style Guide for Authors, Editors, and Publishers (http://www.nlm.nih.gov/citingmedicine
• References to an article with six or fewer authors: Meltzer SJ, Abnen DJ, Battifour A, Yokokota J, Cline MJ. Protooncogene abnormalities in colon cancer and adenomatous polyps. Gastroenterology 1987;92:1174-1180.
• References to an article with more than six authors: Shim SG, Rhee JC, Rhee PL, et al. Mechanism of motilin action on smooth muscle of the human stomach. Korean J Gastroenterol 2002;39:4-12.
• Reference to a book: Day RA. How to write and publish a scientific paper. 3rd ed. Phoenix: Oryx, 1988.
• Reference to a chapter in a book: Costa M, Furness JB, Llewellyn-Smith IF. histo-chemistry of the enteric nervous system. In: Johnson LR, ed. Physiology of the gastrointestinal tract. Volume 1. 2nd ed. New York: Raven, 1987:1-40.
World Health Organization (WHO). WHO statistical information system [Internet]. Geneva: WHO; c2010 [cited 2012 Jan 5]. Available from: http://www.who.int/whosis/en/menu.cfm
Each table must be simple and typed on a separate page with its heading above it. Explanatory material should be placed in footnotes below the table, and should not be included in the heading. All non-standard abbreviations should be explained in the footnotes (indicated by *, †, ‡, §, Ⅱ, ¶, #). Statistical measures such as SD or SEM should be identified. Vertical and horizontal rules between entries should be omitted. Each table should be referred to consecutively and numbered in order of citation. Tables should be double-spaced, including headings. Larger sheets of paper must not be used. Tables should be numbered consecutively in Arabic numerals beginning with 1.
8. Figure legends
Figure legends should be double-spaced on a separate sheet. Symbols, arrows, and letters should be used to indicate parts of illustrations. Each figure should be referred to in the text consecutively and should be numbered in order of citation.
We encourage authors to use colored figures if they will enhance the presentation of the data. Only high-resolution figure files (Minimum 300 dpi) should be submitted, preferably in JPEG or EPS format. Adherence to these requirements from the outset will prevent the Production Editor from contacting the author at a later stage for better quality figures.
When using medical terminology, please adhere to the standard usage found in the guide to terminology recently published by the Korean Medical Association (http://term.kma.org/
11. Units of measurement
Laboratory measurements should be in SI units (International System of Units). The metric system is preferred when expressing length, area, mass, and volume.