1. Department of Obstetrics, Gynecology and Women's Health, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, New York, USA.
2. Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, Massachusetts, USA.
3. Department of Obstetric and Gynecology, New York University School of Medicine, New York, New York, USA.