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Guidelines for Authors

Guidance for Authors on the Preparation and Submission of Manuscripts to the Journal of Gastrointestinal and Liver Diseases*

The Journal of Gastrointestinal and Liver Diseases is published quarterly and the papers submitted for publication should include original papers on clinical or fundamental research, clinical case reports, reviews, letters to the editor, book reviews.
The articles are published after being submitted to blind peer reviewing by experts in specific fields.
Submitting a scientific paper for publication is subject to the fulfillment of the following statements:
– the paper is original and has not been published in other journals or books; please consult the recommendations of the International Committee of Medical Journal Editors regarding overlapping publications.
– the paper does not infringe upon any copyright or other proprietary right;
– the manuscript has been reviewed and approved by all named authors.

The statements can be found here:
• Copyright Assignment Form
• Declaration of Conflict of Interest.
All these statements should be included in a formal declaration signed by all the authors. The filled in, signed and scanned images of these two forms have to be uploaded at the last step of the submission process (Step 4. Uploading Supplementary Files).
If your paper contains studies on human or animal subjects, you must insert in the ”Methods” section a statement mentioning the approval of the medical ethical commission of the organization in which the study was realized.

Informed consent
Please send copies of patients᾽ consent forms in which patients or other subjects of your experiments clearly grant permission for inclusion in the study and/or the publication of photographs or other material that might identify them.
Please note that Journal of Gastrointestinal and Liver Diseases is a member of COPE (Committee on Publication Ethics) and failure to comply with their guidelines may lead to the rejection of the manuscript.
Only manuscripts in English will be accepted.

Types of Articles

Editorials
Editorials are invited articles or comments concerning a specific paper in the Journal or a topical issue in the field.
Although editorials are normally invited or written by an Editor, we also accept unsolicited editorials.
Typical length: 2000 words, 40 references.
Review Articles
These should aim to provide the reader with an overview of an important and topical subject, and highlight unresolved questions and future directions. Most reviews are solicited by the editors, but unsolicited submissions may also be considered for publication. Section headings should be: Abstract,
Introduction, brief main headings, and References.
Typical length: 4000 words, 100 references.

Original Articles
These may be randomized trials, intervention studies,
studies of screening and diagnostic tests, laboratory and animal
studies, cohort studies, cost-effectiveness analyses, case-control
studies, and surveys with high response rates, which represent
new and significant contributions to the field.
Original articles should have the following structure:
1. Background & Aims;
2. Methods;
3. Results;
4. Discussion;
5. Conclusions;
6. Acknowledgement;
7. References.
Word limit: 3500 words.

Meta-analyses or systematic reviews
PRISMA guidelines should be followed for preparation of meta-analyses and systematic reviews, and articles are subject to the usual peer review process. Meta-analyses and systematic reviews have a word limit of 3500–5000 words, with an abstract of up to 250 words and up to 75 references and 3–7 figures or tables.

Case Reports
These are short discussions of a case or case series with unique features not previously described that make an important teaching point or scientific observation. Section headings should be: Abstract, Introduction, Case Report, Discussion, Acknowledgments (if applicable), References.
The Introduction should describe the purpose of the report, the significance of the disease and its specificity, and briefly review the relevant literature.
Case reports should include the general data of the case, medical history, family history, chief complaint, present illness, clinical manifestation, methods of diagnosis and treatment, and outcome.
Typical length: 1200 words, 30 references.

Letters to the Editor
These include brief constructive comments concerning previously published articles in the journal. Letters should have a title and include appropriate references, and include the corresponding author‘s e-mail address. Letters are edited, sometimes extensively, to sharpen their focus. They may be sent for peer review at the discretion of the Editors.
Typical length: 600 words, 5 references; 1 table and/or 1 figure may be included.

Preparing the manuscripts
The paper should be written in a concise style, and should contain the strictly necessary number of pages, figures, tables.
For submitting a manuscript in electronic format the following conditions must be fulfilled:
the text should be sent as a Word document (not as PDF format), in 12p Times New Roman fonts, 1.5 line spacing.
Use only standard abbreviations; the full term for which an abbreviation stands should precede its first use in the text. In the title and the abstract the abbreviations should be avoided;
the tables should be numbered with Roman numerals according to the order in which they are mentioned in the text;
the illustrations / figures should be submitted as separate files named with the corresponding number (e.g „figure_1”).
The following formats for figure files are accepted:
• EPS for diagrams / vector images
• TIFF for photographs and screen dumps at a resolution of 300 dpi.
Figures that are submitted in color will be published with reproduction costs (20€ or 24 USD per figure). As the full text of the journal will be available in PubMed Central, please also refer to their detailed file specifications for images: http://www.ncbi.nlm.nih.gov/pmc/pub/filespec-images/
the legend for figures, with Arabic numerals in order of appearance in the text, should be placed on a separate page at the end of the manuscript, after the References.
In case of the reproduction of previously published parts or figures, it is necessary to attach the scanned written consent of the author as well as of the publishing house where it was originally published, including the source, in the fourth stage of the paper submission process.
The names of the patients should be concealed on all illustrations; patients in all photos should have a black band over their eyes in order to prevent their identification.

Structure of the manuscript
Title page (on a distinct page) includes: only the title of the paper! Any idenfiable information should be removed, such as: authors᾽ names, department or institution, or e-mail addresses. This information is entered separately during the submission process on the website. The authors‘ information should be separated from the article to ensure a blind peer review process.
Abstract (on a distinct page) precedes the text body. The abstract should be structured into the same section as the paper.
Keywords Three to five key words will be written for every paper. Please use Medical Subject Headings (the National Library of Medicine‘s controlled vocabulary thesaurus used for indexing articles for PubMed). A helpful tool that you may use to find the best keywords is the Mesh on Demand provided by NLM.
Article content and structure – please see above by article type.
References.This journal adheres to International Committee of Medical Journal Editors recommendations for the Conduct, Reporting, Editing and Publication of Scholarly Work in Medical Journals (www.icmje.org). An exhaustive citation style guide can be also found in the NLM book Citing Medicine, 2nd edition. Please include the works cited in the paper, according to their occurrence in the text, inserted between square brackets []. Titles of medical journals should be abbreviated according to the Index Medicus. List all authors up to six, using six and „et al.” when the number is greater than six.
Authors are responsible for the accuracy and completeness of their references and for correct text citation!

The following format should be used for listed references:
Article in print journal: Nasr JY, Schoen RE. Prevalence of adenocarcinoma at esophagectomy for Barrett’s esophagus with high grade dysplasia. J Gastrointest Oncol 2011;2:34-38
Article in electronic format (online): Chakrabarti S, Davidge ST. G-protein coupled receptor 30 (GPR30): a novel regulator of endothelial inflammation. PLoS One 2012;7: e52357. Available from: http://journals.plos.org/plosone/article?id=1 .1371/journal.pone.0052357doi: 10.1371/journal.pone.0052357
Book: Murray PR, Rosenthal KS, Kobayashi GS, Pfaller MA. Medical microbiology. 4th ed. St. Louis: Mosby; 2002.
Book chapter: Hofmann AF. The enterohepatic circulation of bile acids in health and disease. In: Sleisenger MH, FordtranJS, eds. Gastrointestinal Disease. Volume 1. 5th ed. Philadelphia: Saunders, 1993: 127-150

Specific recommendations
If the paper presents the results of observational studies, read the STROBE statement, if the paper reports a clinical trial read the CONSORT statement, if the paper is reporting the results of a diagnostic study, read the STARD statement, if the paper is reporting the results of a clinical case, read the CARE statement.

The Editorial Team
J Gastrointestin Liver Dis