1. From the Department of Obstetrics and Gynecology, Hospital of the University of Pennsylvania, and the Department of Obstetrics and Gynecology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (C.C.); and the Departments of Radiology (A.K.), Urology (A.S.F.), Obstetrics and Gynecology (M.E.S.), and Pathology (E.O.), Massachusetts General Hospital, and the Departments of Radiology (A.K.), Surgery (A.S.F.), Obstetrics and Gynecology (M.E.S.), and Pathology (E.O.), Harvard Medical...