1. Department of Obstetrics and Gynecology, Lenox Hill Hospital, 100 East 77th St., New York, NY 10075, USA
2. Department of Obstetrics and Gynecology, Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, NY, USA
3. Lenox Hill Hospital, Zucker School of Medicine at Hofstra/Northwell, New York, NY, USA
4. Faculty of Health Sciences Brandenburg, Potsdam, Germany