DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Elvander C, Ahlberg M, Thies-Lagergren L. et al.
Birth position and obstetric anal sphincter injury: a population-based study of 113 000 spontaneous births.
BMC Pregnancy Childbirth 2015;
15: 252
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