1. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology; David Geffen School of Medicine at UCLA; Los Angeles California USA
2. Fetal Diagnostic Centers; Pasadena, Tarzana, and Lancaster California USA
3. Division of Pediatric Cardiology, Department of Pediatrics; UCLA Mattel Children's Hospital, David Geffen School of Medicine at UCLA; Los Angeles California USA