Institution: | (1) Department of Obstetrics and Gynecology, and Section of Female Pelvic Medicine and Reconstructive Surgery , University of Oklahoma Health Sciences Center, 920 Stanton L. Young Boulevard, WP2410, (PO Box 26901), Oklahoma City, OK 73190, USA;(2) Department of Obstetrics and Gynecology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA |