PRISMA.
Blegen
Mary A
MA
D015982:Bias; D057189:Checklist; D017408:Guidelines as Topic; D006801:Humans; D015201:Meta-Analysis as Topic; D011643:Publishing / Q000592:standards; D012107:Research Design / Q000592:standards*; D012196:Review Literature as Topic; D014956:Writing / Q000592:standards*