1. Department of Internal Medicine; University of Utah Affiliated Hospitals; Salt Lake City Utah U.S.A
2. Department of Pathology; University of Utah; Salt Lake City Utah U.S.A
3. Department of Radiology; University of Utah; Salt Lake City Utah U.S.A
4. Department of Pediatrics, Division of Medical Genetics; Stanford University; Stanford California U.S.A
5. George E. Wahlen VA Medical Center; Salt Lake City Utah U.S.A
6. University of Utah School of Medicine; Salt Lake City Utah U.S.A
7. Division of Epidemiology; Salt Lake City Utah U.S.A
8. Division of Otolaryngology-Head and Neck Surgery; University of Utah; Salt Lake City Utah U.S.A
9. Division of Cardiovascular Medicine, Pediatric Cardiology, Molecular Medicine Program; University of Utah; Salt Lake City Utah U.S.A