1. Department of Obstetrics and Gynecology; Mt Sinai School of Medicine; New York NY USA
2. Fetal Medicine Foundation of America; New York NY USA
3. Comprehensive Genetics; New York NY USA
4. Department of Obstetrics and Gynecology, Tisch Medical School; New York University; New York NY USA
5. Department of Obstetrics and Gynecology; Columbia University College of Physicians and Surgeons; New York NY USA