DOI: 10.1055/s-00030576

Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics

References

Gottvall K, Allebeck P, Ekéus C.
Risk factors for anal sphincter tears: the importance of maternal position at birth.

BJOG 2007;
114 (10) 1266-1272

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