1. Department of Cardiology; Hunan Children's Hospital; Changsha Hunan China
2. Division of Pediatric Cardiology; Children's Hospital and Medical Center; Omaha Nebraska
3. Pediatric Cardiology; Children's Hospital of San Antonio; San Antonio Texas
4. Children's Hospital of Georgia; Georgia Regents University; Augusta Georgia
5. Pediatric Cardiology; Joe DiMaggio Children's Hospital; Hollywood Florida