1. Maternal Fetal Medicine, Department of Obstetrics and Gynecology Howard University College of Medicine Washington DC USA
2. Maternal Fetal Medicine, Women's Services, ProHealth Care Waukesha WI USA
3. Department of Obstetrics and Gynecology Aspirus Health Care Wausau WI USA
4. Maternal Fetal Medicine Aspirus Health Care Wausau WI USA