1. Division of Pediatric Cardiology, McGovern Medical School; University of Texas Health Science Center at Houston & Children's Memorial Hermann Hospital; 6410 Fannin St, Suite 425 Houston TX 77030 USA
2. The Fetal Center at Children's Memorial Hermann Hospital, Department of Obstetrics, Gynecology and Reproductive Sciences; UT Health - McGovern Medical School; Houston TX USA
3. Department of Obstetrics and Gynecology; Paracelsus Medical University; Salzburg Austria