Acceptable secondary publication

Secondary publication of material published in other journals or online may be justifiable and beneficial,especially when intended to disseminate important information to the widest possible audience （e.g.,guidelines produced by government agencies and professional organizations in the same or a different language）.Secondary publication for various other reasons may also be justifiable provided the following conditions are met:

1.The authors have received approval from the editors of both journals （the editor concerned with secondary publication must have access to the primary version）.

2.The priority of the primary publication is respected by a publication interval negotiated by both editors with the authors.

3.The paper for secondary publication is intended for a different group of readers; an abbreviated version could be sufficient.

4.The secondary version faithfully reflects the authors,data,and interpretations of the primary version.

5.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.

6.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 NLM does not consider translations to be“republications” and does not cite or index them when the original article was published in a journal that is indexed in MEDLINE.

When the same journal simultaneously publishes an article in multiple languages,the MEDLINE citation will note the multiple languages （for example,Angelo M.Journal networking in nursing:a challenge to be shared.Rev Esc Enferm USP.2011 Dec 45[6]:1281-2,1279-80,1283-4.Article in English,Portuguese,and Spanish.No abstract available.PMID 22241182）.

再次发表已在其他期刊上发表或已在线发表的资料，可能是正当的和有益的，尤其是意在向尽可能广泛的读者传播重要的信息（如以同一种或不同语言发表由政府机构和专业组织制定的指南）。只要满足以下条件，出于各种其他原因的再次发表也可以是正当的：

（1）作者已征得首次和再次发表的期刊编辑的同意（准备再次发表的期刊的编辑必须得到首次发表的版本）。

（2）两种期刊的编辑与作者应协商确认再次发表与首次发表的时间差，以尊重首次发表的优先权。

（3）再次发表的文章意在针对不同的读者群，以节略本形式发表就足够。

（4）再次发表的版本应忠实地反映首次发表的版本中的数据和解释。

（5）再次发表的版本应告知读者、同行及文献存档机构，该文已在他处全文或部分发表过。例如，可写上这样的话：“该论文以在[期刊名称和完整的目录著录信息]首次报告的研究为基础。”再次发表的版本应守用首次发表的版本。

（6）再次发表的论文标题中应指明是首次发表的再次发表，如全文再发表、节略本再发表、全译本或节译。需要注意的是，NLM 不视翻译为“再发表”，当原文发表在已被MEDLINE 收录的期刊上时，便不再收录翻译的版本。

如果同一期刊以多种语言同时发表某篇论文，MEDLINE在收录时标示多种语言。例如：

Angelo M.Journal networking in nursing:a challenge to be shared.Rev Esc Enferm USP.2011 Dec 45（6）:1281-2，1279-80，1283-4.Article in English，Portuguese，and Spanish.No abstract available.PMID 22241182。