2,994
回編集
差分
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編集の要約なし
*no guidelines on the number of included studies in SR/MA
*Cochrane has published SR/MA with only 1 study included
===optimal databases===
Bramer WM, et al. Syst Rev. 2017 PMID:29208034
*Medline/PubMed
*Web of Science
*Embase and/or Scopus
*Google Scholar
**grey literature
