PMID 1951509. doi:10.1016/0002-9378(91)90465-4. Neale, E. J.; Rogers, M. S. Vaginal ultrasound for ruling out placenta previa. Case report. BJOG: an International
to tighten the vaginal orifice and perineum. This procedure, also called re-circumcision, is primarily performed after vaginaldelivery, but can also be