VAC accepts the ICMJE`s recommendations regarding the Directive on Data Sharing Declarations (icmje.org/icmje-recommendations.pdf). It is recommended that all manuscripts reporting on the results of clinical trials submit, as of 1 January 2019, a data exchange report in accordance with the ICMJE guidelines. 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 (crossmark.crossref.org/dialog/?doi=10.3346/jkms.2017.32.7.1051&domain=pdf&date_stamp=2017-06-05). I analyzed the number of authors listed in the Korean Journal of Medical Science (JKMS), Yonsei Medical Journal (YMJ) and JAMA between 1990 and 2015. The results are presented in Table 1. Each year, the number of authors increased from 3-4 in 1990 to 6-7 in 2015 in the 3 journals of general medicine. This trend can be explained by a growing number of researchers, collaborators and centres involved in research around the world. The growing number of authors was more striking in the original articles than in the JKMS and YMJ case reports.
The number of case report authors in JAMA did not change between 1990 and 2015. Analyzing the number of authors per original article for a single institute in 2000-2015, the numbers were 6 to 7 in JKMA and YMJ and only 2.2 in JAMA in 2015 (Table 1). One can suspect that this tendency to multi-authority in Korean magazines is due to the author of gifts. When I ask some correspondent authors to think about the content of their manuscripts submitted to the JKMS, they surprise me by the ignorance of what is contained in their works and that they must be responsible for their articles. On many occasions, the first responds to the requests of the editor rather than the corresponding authors. It clearly states inappropriate correspondence (of gifts) that requires appropriate revisions in the journal`s editorial policy. When reporting experiments on human or animal subjects, authors should indicate whether they have obtained IRB authorization for the study and patient consent. When reporting animal experiments, authors should indicate whether the handling of animals has been controlled by the Laboratory Animal Management Entity. The “Methodology” section of an experimental study should deal with sufficient detail so that it can be replicated by others. Ensure that the terms gender (in the declaration of biological factors) and sex (identity, psychosocial or cultural factors) are used correctly and, unless inappropriate, report the sex and/or sex of participants, the sex of animals or cells, and describe the methods used to determine sex and sex. If the study focused on an exclusive population, for example in a single sex, the authors should explain why, except in obvious cases (e.g.
B prostate cancer). . . .