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Research and
publication ethics

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Enactment May 22, 2012

Research ethics
All of the manuscripts should be prepared based on strict observation of research and publication ethics guidelines recommended by the Council of Science Editors (http://www.councilscienceeditors.org/), International Committee of Medical Journal Editors (ICMJE, http://www.icmje.org/), World Association of Medical Editors (WAME, http://www.wame.org/), and the Korean Association of Medical Journal Editors (KAMJE, https://www.kamje.or.kr/en/main_en). All studies involving human subjects or human data must be reviewed and approved by a responsible Institutional Review Board (IRB). Please refer to the principles embodied in the Declaration of Helsinki (https://www.wma.net/policies-post/wma-declaration-of-helsinki-ethical-principles-for-medical-research-involving-human-subjects/) for all investigations involving human materials. Animal experiments also should be reviewed by an appropriate committee (IACUC) for the care and use of animals. Also studies with pathogens requiring a high degree of biosafety should pass review of a relevant committee (IBC). The approval should be described in the Methods section. For studies of humans including case reports, state whether informed consents were obtained from the study participants. The editor of YUJM may request submission of copies of informed consents from human subjects in clinical studies or IRB approval documents. The YUJM will follow the guidelines by the Committee on Publication Ethics (COPE, http://publicationethics.org/) for settlement of any misconduct.

Conflicts of interest
The corresponding author of an article is asked to inform the Editor of the authors' potential conflicts of interest possibly influencing the research or interpretation of data. A potential conflicts of interest should be disclosed in the cover letter even when the authors are confident that their judgments have not been influenced in preparing the manuscript. Such conflicts may include financial support or private connections to pharmaceutical companies, political pressure from interest groups, or academic problems. Disclosure form shall be same with ICMJE Uniform Disclosure Form for Potential Conflicts of Interest (http://www.icmje.org/coi_disclosure.pdf). The Editor will decide whether the information on the conflicts should be included in the published paper. In particular, all sources of funding for a study should be explicitly stated. The YUJM asks referees to let its editor know of any conflicts of interest before reviewing a particular manuscript.

Authorship
Each author is expected to have made substantial contribution to the conception or design of the work; or the acquisition, analysis, or interpretation of data; or the creation of new software used in the work; or have drafted the work or substantively revised it; AND to have approved the submitted version (and any substantially modified version that involves the author’s contribution to the study); AND to have agreed both to be personally accountable for the author’s own contributions and to ensure that questions related to the accuracy or integrity of any part of the work, even ones in which the author was not personally involved, are appropriately investigated, resolved, and the resolution documented in the literature.
Those who do not meet the above criteria should be acknowledged as contributors instead of authors. The corresponding author is responsible for completing this information at submission, and it is expected that all authors will have reviewed, discussed, and agreed to their individual contribution ahead of this time.
When a large, multicenter group has conducted the work, the group should identify the individuals who accept direct responsibility for the manuscript. When submitting a manuscript authored by a group, the corresponding author should clearly indicate the preferred citation and identify all individual authors as well as the group name. Journals generally list other members of the group in the Acknowledgements. Acquisition of funding, collection of data, or general supervision of the research group alone does not constitute authorship.

Contributor Roles Taxonomy (CRediT)
• Conceptualization
• Data curation
• Formal analysis
• Funding acquisition
• Investigation
• Methodology
• Project administration
• Resources
• Software
• Supervision
• Validation
• Visualization
• Writing - original draft
• Writing - review & editing

Redundant publication and plagiarism
Redundant publication is defined as “reporting (publishing or attempting to publish) substantially the same work more than once, without attribution of the original source (s).” Characteristics of reports that are substantially similar include the following: (a) “at least one of the authors must be common to all reports (if there are no common authors, it is more likely plagiarism than redundant publication),” (b) “the subjects or study populations are the same or overlapped,” (c) “the methodology is typically identical or nearly so,” and (d) “the results and their interpretation generally vary little, if at all.”
When submitting a manuscript, authors should include a letter informing the editor of any potential overlap with other already published material or material being evaluated for publication and should also state how the manuscript submitted to YUJM differs substantially from other materials. If all or part of your patient population was previously reported, this should be mentioned in the Methods, with citation of the appropriate reference(s).
The duplication will be checked through crosscheck (https://app.ithenticate.com/) or eTBLAST (https://helioblast.heliotext.com) before submission. If duplicate publication related to the papers of this journal is detected, the manuscripts may be rejected, the authors will be announced in the journal, and their institutes will be informed. There will also be penalties for the authors.

Secondary publication
It is possible to republish manuscripts if the manuscripts satisfy the condition of secondary publication of the Uniform Requirements for Manuscripts Submitted to Biomedical Journals by International Committee of Medical Journal Editors (ICMJE), available from http://www.icmje.org/. These are:
• The authors have received approval from the editors of both journals (the editor concerned with the secondary publication must have access to the primary version).
• The priority for the primary publication is respected by a publication interval negotiated by editors of both journals and the authors.
• The paper for secondary publication is intended for a different group of readers; an abbreviated version could be sufficient.
• The secondary version faithfully reflects the data and interpretations of the primary version.
• The secondary version informs readers, peers, and documenting agencies that the paper has been published in whole or in part elsewhere—for example, with a note that might read, "This article is based on a study first reported in the (journal title, with full reference)"—and the secondary version cites the primary reference.
• The title of the secondary publication should indicate that it is a secondary publication (complete or abridged republication or translation) of a primary publication. Of note, the United States National Library of Medicine (NLM) does not consider translations as "republications" and does not cite or index them when the original article was published in a journal that is indexed in MEDLINE.

Registration of the clinical trial research
Clinical trial defined as “any research project that prospectively assigns human subjects to intervention and comparison groups to study the cause-and-effect relationship between a medical intervention and a health outcome” should be registered to the primary registry to be prior publication. YUJM accepts the registration in any of the primary registries that participate in the WHO International Clinical Trials Portal (http://www.who.int/ictrp/en/), NIH ClinicalTrials.gov (http://www.clinicaltrials.gov/), ISRCTN Resister (www.ISRCTN.org), or the Clinical Research Information Service (CRIS), Korea CDC (https://cris.nih.go.kr/cris/index.jsp). The clinical trial registration number shall be published at the end of the abstract.

Data sharing statement
YUJM accepts the ICMJE Recommendations for data sharing statement policy (http://icmje.org/icmje-recommendations.pdf). All manuscripts reporting clinical trial results should submit a data sharing statement following the ICMJE guidelines from 1 July 2018. Authors may refer to the editorial, “Data Sharing statements for Clinical Trials: A Requirement of the International Committee of Medical Journal Editors,” in JKMS Vol. 32, No. 7:1051-1053 (http://crossmark.crossref.org/dialog/?doi=10.3346/jkms.2017.32.7.1051&domain=pdf&date_stamp=2017-06-05).

Process to manage the research and publication misconduct
When the Journal faces suspected cases of research and publication misconduct such as a redundant (duplicate) publication, plagiarism, fabricated data, changes in authorship, undisclosed conflicts of interest, an ethical problem discovered with the submitted manuscript, a reviewer who has appropriated an author’s idea or data, complaints against editors, and other issues, the resolving process will follow the flowchart provided by the Committee on Publication Ethics (http://publicationethics.org/resources/flowcharts). The Editorial Board of YUJM will discuss the suspected cases and reach a decision. YUJM will not hesitate to publish errata, corrigenda, clarifications, retractions, and apologies when needed.
For the policies on research and publication ethics not stated in the Instructions, Guidelines on Good Publication (http://publicationethics.org/) or Good Publication Practice Guidelines for Medical Journals (http://kamje.or.kr/) can be applied.



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