DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Moher D, Liberati A, Tetzlaff J. et al.
Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement.
PLoS Med 2009;
6: e1000097
DOI: 10.1371/journal.pmed.1000097.
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