1. Department of Pediatrics; Division of Pediatric Cardiology; Stanford University School of Medicine; Palo Alto California
2. Immunogenetics/HLA Laboratory; Bloodworks Northwest; Seattle Washington
3. Division of Pediatric Cardiology; Seattle Children’s Hospital; Seattle Washington
4. Pathology and Laboratory Medicine Division; Children’s National Health System; Washington D.C.
5. Departments of Pathology and Pediatrics; George Washington University; Washington D.C.