1. Department of Cardiology; University of Washington School of Medicine; Seattle Washington
2. Departments of Pediatrics and Pathology; Section of Medical Genetics; Dartmouth-Hitchcock Medical Center; One Medical Center Drive; Lebanon New Hampshire
3. Department of Pathology; University of Washington School of Medicine; Seattle Washington
4. Department of Molecular and Human Genetics; Baylor College of Medicine; Houston Texas
5. Prevention Genetics; Marshfield Wisconsin
6. Department of Medical Genetics; Children's Hospital of Pittsburgh; Pittsburgh Pennsylvania
7. Laboratory Corporation of America/Dynacare; Seattle Washington