DOI: 10.1055/s-00000020

Geburtshilfe und Frauenheilkunde

References

Blencowe H, Cousens S, Oestergaard MZ et al.
National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications.

Lancet 2012;
379: 2162-2172

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