Affiliation: | a Departments of Obstetrics and Gynecology of the University of North Carolina School of Medicine, Chapel Hill, NCb University of Texas Medical Branch at Galveston, Galveston, TXc Queen Charlotte's and Chelsea Hospital & Imperial College London, London, United Kingdomd King Edward Memorial Hospital for Women, Mumbai, Indiae University of British Columbia, Vancouver, British Columbia, Canadaf University of Utah School of Medicine, Salt Lake City, UTg Ohio State University, Columbus, OHh Stanford University Medical Center, Stanford, CAi Wayne State University, Ann Arbor, MIj Christiana Hospital, Newark, DEk New York Hospital Weill Cornell Medical Center, New York, NY |