1 Coronary Anomalies Program, Texas Children's Hospital, Houston, Tex; The Lillie Frank Abercrombie Section of Pediatric Cardiology, Texas Children's Hospital/Baylor College of Medicine, Houston, Tex.
2 Coronary Anomalies Program, Texas Children's Hospital, Houston, Tex; Division of Congenital Heart Surgery, Department of Surgery, Texas Children's Hospital/Baylor College of Medicine, Houston, Tex. Electronic address: cmmery@texaschildrens.org.