1. Department of Cardiology Boston Children's Hospital Boston Massachusetts USA
2. Department of Pediatrics Harvard Medical School Boston Massachusetts USA
3. Department of Obstetrics and Gynecology Brigham and Women's Hospital Boston Massachusetts USA
4. Department of Obstetrics and Gynecology Harvard Medical School Boston Massachusetts USA
5. Department of Radiology Brigham and Women's Hospital Boston Massachusetts USA
6. Department of Radiology Harvard Medical School Boston Massachusetts USA