1. Pediatric cardiology; The Children's Hospital of Michigan; Wayne State University; Detroit Medical Center; Detroit; Michigan
2. Adult cardiology; Michigan Adult Congenital Heart Center; Wayne State University; Detroit Medical Center; Detroit; Michigan
3. The Center for Pediatric and Congenital Heart Diseases; Cleveland Clinic Foundation; Cleveland; Ohio
4. Pediatric cardiology; Joe DiMaggio Children's Hospital; Hollywood; Florida