1. Department of Epidemiology; College of Public Health and Health Professions; College of Medicine; University of Florida; Gainesville FL USA
2. Center for American Indian Health Research; University of Oklahoma Health Science Center; Oklahoma City OK USA
3. Department of Biochemistry and Biophysics; University of California; San Francisco CA USA
4. Missouri Breaks Industries Research Inc.; Eagle Butte SD USA
5. Department of Genetics; Texas Biomedical Research Institute; San Antonio TX USA
6. MedStar Health Research Institute; Hyattsville MD USA