DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
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References
Elvander C, Ahlberg M, Thies-Lagergren L, Cnattingius S, Stephansson O.
Birth position and obstetric anal sphincter injury: a population-based study of 113 000 spontaneous births.
BMC Pregnancy Childbirth 2015;
15: 252 . Doi: 10.1186/s12884-015-0689-7
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