DOI:
10.1055/s-00000095
Zeitschrift für Geburtshilfe und Neonatologie
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References
Walther F, Küster DB, Bieber A. et al.
Impact of regionalisation and case-volume on neonatal and perinatal mortality:
an umbrella review.
BMJ Open 2020;
10: e037135
DOI: 10.1136/bmjopen-2020-037135.
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