1. Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, CA, USA
2. Department of Obstetrics and Gynecology, University of California, Irvine, CA, USA
3. Department of Obstetrics and Gynecology, University of Wisconsin, Madison, WI, USA
4. Department of Obstetrics and Gynecology, Memorial Care Miller Children’s & Women’s Hospital Long Beach, Long Beach, CA, USA