1. Brigham & Women's Hospital, Harvard Medical School; Boston MA
2. American Institute of Ultrasound in Medicine; Laurel MD
3. Massachusetts General Hospital; Boston MA
4. Cincinnati Children's Hospital Medical Center; Cincinnati OH
5. Texas Children's Hospital Pavilion for Women; Houston TX
6. Northwell Health; Manhasset NY
7. OhioHealth Obstetrics and Gynecology Physicians; Columbus OH
8. University of California; Los Angeles, Los Angeles CA
9. eviCore Healthcare; Franklin TN
10. Maine Medical Partners-Women's Health Maternal Fetal Medicine; Portland ME
11. Eastern Virginia Medical School; Norfolk