1. University of New Mexico School of Medicine; Albuquerque NM U.S.A
2. Department of Dermatology; Mayo Clinic; Rochester MN U.S.A
3. Department of Laboratory Medicine and Pathology; Mayo Clinic; Rochester MN U.S.A
4. Division of Biomedical Statistics and Informatics; Mayo Clinic; Rochester MN U.S.A
5. Department of Pediatrics; Mayo Clinic; Rochester MN U.S.A