GE - Portuguese Journal of Gastroenterology
Guidelines for Authors
Peer Review Policy
Conflict of Interest Statement
Statement of Ethics
English Language Editing
Article Processing Charge (APC)
Digital Object Identifier (DOI)
The GE – Portuguese Journal of Gastroenterology adopts the World Association of Medical Editors’ definition of editorial freedom, which holds that Editors-in-Chief have full authority over the entire editorial content of their journal and the timing of publication of that content. Journal owners should not interfere in the evaluation, selection, scheduling, or editing of individual articles either directly or by creating an environment that strongly influences decisions. The Editor-in-Chief bases editorial decisions on the validity of the work and its importance to the journal’s readers, not on the commercial implications for the journal, and is free to express critical but responsible views about all aspects of medicine without fear of retribution, even if these views conflict with the commercial goals of the publisher. The Editor-in-Chief of the GE – Portuguese Journal of Gastroenterology has the final say in decisions about which advertisements or sponsored content, including supplements, the journal will or will not carry, and he should have the final say in the use of the journal brand and in the overall policy regarding commercial use of journal content.
Manuscripts written in English are considered and should be submitted online:
|Online Manuscript Submission|
All manuscripts must be accompanied by a cover letter that includes a short summary of the article stating why the authors believe that it is suitable for publication in the journal. Assurance should be given in the cover letter that the manuscript is not under simultaneous consideration by any other publication. In the cover letter, the authors should declare their potential conflicts of interest and provide a statement on authorship. If you believe your manuscript deserves to be rapidly assessed, please indicate clearly in the cover letter why the manuscript should be considered fast track. The Editor-in-Chief will evaluate your request and – if granted – commits to communicate a first decision within 48 hours.
In case of problems with submission, please contact:
Mrs. Andreia Neto
Tel. +351 93 799 55 32
All manuscripts are subject to editorial and peer review. Manuscripts are received with the explicit understanding that the work has not been published (wholly or in part) and is not under simultaneous consideration in any language elsewhere. Furthermore, all authors have made substantial contributions and confirm that they have seen and approve the manuscript submission
All articles in this journal are Open Access and meet the requirements of funding bodies or academic institutions. Each article published in the journal is published under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). Articles can be read, downloaded, printed, and shared. Please contact Karger’s Open Access team at email@example.com with questions regarding your funding body.
The copyright of manuscripts is retained by the Portuguese Society of Gastroenterology that grants S. Karger AG, Basel, an exclusive unlimited license to publish the article under a Creative Commons license and identifies S. Karger AG as the original publisher. Submission of an article for publication implies the authors’ consent to publication under the applicable Creative Commons license and the terms and conditions of the Publisher’s Licensing Agreement.
It is the author’s responsibility to obtain permission to reproduce illustrations, tables, etc. from other publications.
Peer Review Policy
The GE – Portuguese Journal of Gastroenterology is a peer-reviewed journal that uses a single-blind peer review. Our aim is to provide authors with fast and constructive feedback regarding their submitted manuscript. The Editor-in-Chief and the international editorial board ensure a thorough and fair peer review and the highest scientific publishing standards. Upon submission, the Editor-in-Chief can accept, reject, send the manuscript to reviewers, or assign the manuscript to a co-editor. Editors guide the peer-review process for papers in their areas of expertise. They select reviewers and make the decision whether to accept/reject or send a manuscript for revision after at least two review reports have been received, and then make a further decision to accept/reject or request further revisions following author revisions. Reviewers must have a recent publication record in the area covered by the submission, must not have published with the authors in the previous 3 years, and must not be from the same institution as the authors. The Editor-in-Chief or the assigned co-editor takes the final decision. The Editor-in-Chief is responsible for maintaining high-quality peer review of papers submitted to the journal.
Conflicts of Interest Statement
Any financial (funding, stocks, patents, employment, honoraria, royalties) or nonfinancial (political, personal, professional) interests/relationships that may be interpreted to have influenced the manuscript must be identified in a Conflicts of Interest statement at the end of the manuscript. If there is no conflict of interest, please state "The authors declare no conflicts of interest."
Statement of Ethics
Research must comply with the guidelines for human studies and animal welfare regulations. Copies of these guidelines and policy statements must be available for review by the editors if necessary.
Manuscripts reporting studies on human subjects should include evidence that the research was conducted ethically in accordance with the World Medical Association Declaration of Helsinki. In particular, authors must provide a Statement of Ethics at the end of the main text that all subjects (or their parents or guardians) have given their informed written consent and that the study protocol was approved by an appropriate ethics committee. If no approval was required, this must be stated in this section. All patients should be identified by numbers or aliases, not by their real names. For clinical trials, registration in a public trials registry before or at the time of first patient enrolment is a condition of consideration for publication. The trial registration number must be provided upon submission at the end of the abstract.
Authors should state that animal experimentation was approved by the appropriate institutional review body. We encourage authors to comply with the Animal Research: Reporting In Vivo Experiments (ARRIVE) guidelines developed by the National Centre for the Replacement, Refinement & Reduction of Animals in Research (NC3Rs).
Whether intentional or not, plagiarism is a serious violation. Karger Publishers defines plagiarism as reproduction of another work with at least 25% similarity and without citation. If evidence of plagiarism is found before/after acceptance or after publication of the paper, the author will be offered a chance for rebuttal. If the arguments are not found to be satisfactory, the manuscript will be retracted and the author sanctioned from publishing papers for a period to be determined by the responsible editor(s).
A short statement detailing the contributions of each person named as an author should be included. Please refer to the ICMJE’s criteria for authorship. If an author is removed or added to the manuscript after submission, an explanation and a signed statement of agreement for the requested change from all listed authors and from the author to be removed or added are required.
Authors should indicate in the cover letter which manuscript type is being submitted for publication:
Original articles are fully documented reports of original clinical or basic research that must describe full sets of interesting, original experiments in current research. Original articles should include the following sections: Introduction, Materials and Methods, Results, Discussion and Conclusions, Acknowledgements (if applicable), References, Tables and Figures.
Original articles should not exceed 4,000 words, excluding up to 6 tables or figures and up to 60 references.
Review articles can be presented in the Introduction, Methods, Results, and Discussion format. The subject must be clearly defined. The objective of a systematic review should be to produce an evidence-based conclusion. The Methods should give a clear indication of the literature search strategy, data extraction, grading of evidence, and analysis. We strongly encourage authors to comply with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.
Systematic review articles should not exceed 4,000 words, excluding up to 6 tables or figures and up to 100 references.
Systematic Reviews can be presented in the Introduction, Methods, Results, Discussion format. The subject must be clearly defined. The objective of a systematic review should be to produce an evidence-based conclusion. The Methods should give a clear indication of the literature search strategy, data extraction, grading of evidence and analysis. We strongly encourage authors to comply with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines (http://www.prisma-statement.org/).
Systematic review articles should not exceed 4 000 words, excluding up to 6 tables or figures and up to 100 references.
Clinical case studies should include the following sections: Introduction, Clinical Case, and Discussion. Clinical Case Studies should not exceed 2,000 words excluding up 25 references. We strongly encourage authors to comply with the CARE guidelines (http://www.care-statement.org/).
Editorials are normally written at the invitation of the editor and consist of commentary on articles published in the journal or on subjects of particular relevance. Editorials should not exceed 1,500 words and 20 references and may include 1 table and 1 figure. An abstract is not required, but this section should have a title and keywords in Portuguese.
Letters to the Editor should consist of critical comments on an article published in the journal or a short note on a particular topic or clinical case. Letters to the Editor should not exceed 600 words and 10 references and may contain 1 figure or table.
Images in gastroenterology and hepatology This section is intended for the publication of clinical, radiological, histological, and surgical images related to gastroenterological or hepatological cases. The title should have no more than 8 words. There should be 3 or less authors. Images should be of high quality and educational value and may be in color or black and white. Up to 4 figures will be published. Captions should be brief and informative. Arrows or other symbols should be included as needed to facilitate understanding of the images. The text should not exceed 500 words, up to 5 references but without tables or plots, and should include a short clinical history and relevant data from the physical examination, laboratory tests, and clinical progression as appropriate. An abstract is not required, but this section should have a title and keywords in Portuguese.
Endoscopic snapshots This section is intended for the publication of rare or educational cases or novel techniques in digestive endoscopy. The text should not exceed 500 words and up to 5 references. Up to 3 figures with brief captions may be included. Figures may be in color. An abstract is not required, but this section should have a title and keywords in Portuguese.
Guidelines In general, published statements intended to guide clinical care (e.g., guidelines, practice parameters, recommendations, consensus statements, and position papers) should describe:
- the clinical problem to be addressed
- the mechanism by which the statement was generated
- a review of the evidence for the statement (if available)
- the statement on practice itself
The preferred word processing program is MS Word. The cover letter, the manuscript, the tables and figures, and multimedia files must be submitted in separate files. The manuscript file must contain all the text elements in the following order: title page, abstract and keywords, main text, acknowledgments, references, table and figure legends. Tables, figures, and multimedia files should be submitted as separate files according to the instructions below. Automatic line numbering should be used continuously from the title page through to the final page. All pages should be numbered, starting from the title page, including figure legends, tables, and figures.Title page: The first page should contain a concise title of the article of no more than 120 characters, the full names of the authors, and their affiliations (hospital, institute etc. where the work was conducted). The full postal address, telephone and fax numbers, as well as the e-mail address of the author to whom correspondence should be sent must be given at the bottom of the title page.
Keywords: 3–10 keywords that reflect the content of the paper must be included.
Abstracts of Original Articles should be divided into the following subsections: Background & Aims, Methods, Results, Conclusions, and Key Messages. The abstract should be less than 300 words.
Abstract of Review Articles should be divided into the following subsections:
Background, Summary and Key Messages. The Background should provide a brief clinical context for the review and is followed by the Summary, which should include a concise description of the main topics covered in the text. The Key Messages encapsulate the main conclusions of the review. Submit the abstract on a separate page. The abstract should be less than 300 words.
Please note that the article title, abstract, and keywords will be published in Portuguese in addition to the English version. Portuguese-speaking authors are required to provide a title, an abstract, and keywords in Portuguese at submission. For non-Portuguese-speaking authors, the title, abstract, and keywords will be translated by the editorial team.
Footnotes: Footnotes should be avoided. When essential, they should be numbered consecutively and appear at the foot of the appropriate page.
Acknowledgements: Include all sources of funding for the research presented in the manuscript, including sponsor names, and explanations of the roles of these sources in the preparation of data or the manuscript, as well as substantive contributions of individuals regarding the research or the manuscript.
Abbreviations: Abbreviations (with the exception of those clearly well-established in the field) should be explained when they are first used.
Units of measurement: Measurements should be expressed in SI units wherever possible.
Drug names: Use generic names of drugs (first letter: lowercase) whenever possible. Registered trade names (first letter: uppercase) should be marked with the superscript registration symbol ® or ® when they are first mentioned.
Tables and illustrations: Tables and figures must be numbered (e.g. Figure 1, Figure 2) and submitted as separate files. Tables require a heading and figures a legend, which must provide sufficient information for either to stand alone. All figures and tables must be cited in the text numerically. Tables should be in Word format. When possible, group several illustrations in a block for reproduction (max. size 180 x 223 mm). b/w half-tone and color figures must have a final resolution of 300 dpi after scaling to final size, line drawings 1,200 dpi. Color figures must be in RGB format. All figures should be in a common format such as PSD, TIF, PNG EPS, or WMF. Vector graphics should be in PPT, AI, or EPS format. See the Technical Instructions for more information.
Multimedia files: Multimedia files should be submitted in a separate file with the original manuscript and with all subsequent submissions. Multimedia material must meet production quality standards for publication without the need for any modification or editing. Acceptable files are MPEG, AVI, or QuickTime formats.
Color illustrations are reproduced free of charge.
Identify references in the text using Arabic numerals [in square brackets]. Do not alphabetize; number references sequentially in the order cited in the text. Material submitted for publication but not yet accepted should be referred to as “unpublished data“ and should not be included in the reference list. The reference list should include only those publications which are cited in the text. Each author’s surname should be followed by their initials with no punctuation other than a comma to separate individual authors. Preferably cite all authors (if not possible include at least 3 authors followed by et al). Abbreviate journal names according to the list of journals indexed for MEDLINE on the NLM website. Also see International Committee of Medical Journal Editors: Uniform requirements for manuscripts submitted to biomedical journals.
(a) Papers published in periodicals:
Nopp A, Cardell LO, Johansson SGO: CD-Sens can be a reliable and easy-to-use complement in the diagnosis of allergic rhinitis. Int Arch Allergy Immunol 2013;161:87–90.
(b) Papers published only with DOI numbers:
Rubin DA, Cano-Sokoloff N, Castner DL, Judelson DA, Wright P, Duran A, Haqq AM: Update on body composition and bone density in children with Prader-Willi syndrome. Horm Res Paediatr DOI: 10.1159/000350824.
Matthews DE, Farewell VT: Using and Understanding Medical Statistics, ed 4, revised. Basel, Karger, 2007.
(d) Edited books:
Costa-Pinto FA, Basso AS: Neural and behavioral correlates of food allergy; in Bienenstock J (ed): Allergy and the Nervous System. Chem Immunol Allergy. Basel, Karger, 2012, vol 98, pp 222–239.
Karger Publishers: Transforming Vesalius: The 16th-Century Scientific Revolution Brought to Life for the 21st Century. Basel, Karger, 2013. http://www.vesaliusfabrica.com/en/new-fabrica.html.
(f) Websites with access date:
World Health Organization: Leprosy elimination project: status report. 2003. http://www.who.int/lep/Reports/s20042.pdf (accessed May 15, 2005). Reference Management Software: The use of EndNote is recommended to facilitate formatting of citations and reference lists. The journal output style can be downloaded from http://endnote.com/downloads/styles.
Standard reporting guidelines have been developed for different study designs and should be followed to ensure that studies are described as clearly as possible. Please see the EQUATOR network for up-to-date reporting guidelines for health research and the MIBBI Portal for life science research.
Supplementary material is restricted to additional data that are not necessary for the scientific integrity and the conclusions of the paper. Please note that all supplementary files will undergo editorial review and should be submitted together with the original manuscript. The editors reserve the right to limit the scope and length of the supplementary material. Supplementary material must meet production quality standards for web publication without the need for any modification or editing. All figures and tables should have titles and legends and all files should be supplied separately and named clearly. Supplementary material will be hosted online at https://karger.figshare.com.
English Language Editing
For authors whose native language is not English, the use of a professional language editing service prior to submission can help to avoid delays with the review process.
Article Processing Charge (APC)
There is no Article Processing Charge (APC).
Karger Publishers permits authors of Open Access articles to post the final, published version of their article in Open Access repositories or on other websites in accordance with the relevant Creative Commons license. Re-posted Open Access articles must:
- follow the terms of the relevant Creative Commons license
- be linked to the final version on www.karger.com
- include the following statement:
“The final, published version of this article is available at http://www.karger.com/?doi=[insert DOI number] (e.g. http://www.karger.com/?doi=10.1159/000365070).” It is the author’s responsibility to fulfill these requirements. Articles to be archived in PubMed Central for any reason, including funding requirements, must be submitted by Karger (see below).
The US National Institutes of Health (NIH) Public Access Policy mandates that final, peer-reviewed manuscripts are archived in its digital database PubMed Central (PMC) within 12 months of the official publication date. As a service to authors, Karger Publishers submits the final, published version of Open Access NIH-funded articles to PMC immediately upon publication. The paper usually receives a PMCID within approximately a month. Karger also complies with other funders’ requirements (including Wellcome Trust and RCUK) for submission to PMC. Authors should include information on their grants in the Acknowledgements section of their papers.
Manuscripts accepted for publication by Karger Publishers are subject to copyediting. Authors should check the changes made by the copy editor and any questions that might have arisen during proofreading.
An e-mail containing a link to download the proofs will be sent to the corresponding author. Proofs should be returned within 48 hours. Alterations made in proofs, other than the correction of printer’s (introduced) errors, are charged to the author and may require editorial approval.
Digital Object Identifier (DOI)
A DOI number will be available as a unique identifier on the title page of each article. DOIs are useful for identifying and citing articles published online without volume or issue information (for more information, see www.doi.org).