1. Division of Pediatric Cardiology, Department of Pediatrics, UCLA Mattel Children's Hospital David Geffen School of Medicine at UCLA Los Angeles CA USA
2. Division of Maternal‐Fetal Medicine, Department of Obstetrics and Gynecology University of California Los Angeles CA USA
3. Department of Reproductive Medicine University of California San Diego CA USA
4. Fetal Diagnostic Centers, Pasadena, Tarzana and Lancaster CA USA
5. Center for Fetal Medicine and Women's Ultrasound Los Angeles CA USA