The Editor assumes that all authors listed in a manuscript have agreed with the following policy of the J Evid-Based Pract on submission of manuscript. Except for the negotiated secondary publication, the manuscript submitted to the J Evid-Based Pract must be previously unpublished and not be under consideration for publication elsewhere. Under any circumstances, the identities of the referees will not be revealed. All published manuscripts become the permanent property of the Korean Society of Evidence-Based Medicine (KSEBM) and may not be published elsewhere without written permission. J Evid-Based Pract adheres completely to guidelines and best practices published by professional organizations, including Recommendations for the Conduct, Reporting, Editing, and Publication of Scholarly Work in Medical Journals (http://www.icmje.org/icmje-recommendations.pdf) from ICMJE and Principles of Transparency and Best Practice in Scholarly Publishing (joint statement by COPE, DOAJ, WAME, and OASPA; http://doaj.org/bestpractice) if otherwise not described below.