TY - JOUR AU - Sung, V W; Hampton, B S TI - Epidemiology of pelvic floor dysfunction JO - Obstet Gynecol Clin North Am IS - 03 VL - 36 PY - 2009 DO - 10.1016/j.ogc.2009.08.002 L3 - PubMed-ID: 19932408 SP - 421 EP - 443 ER -