Risk factors for primary and subsequent anal sphincter lacerations: A comparison of cohorts by parity and prior mode of delivery.
Perone
Nicola
N
D001003:Anal Canal / Q000293:injuries*; D001004:Anus Diseases / Q000209:etiology*; D036861:Delivery, Obstetric / Q000009:adverse effects* / Q000295:instrumentation; D004841:Episiotomy; D005260:Female; D006801:Humans; D009772:Obstetrical Forceps / Q000009:adverse effects; D011247:Pregnancy