1. Department of Health Sciences Research; Division of Biomedical Statistics and Informatics; Section of Cancer Center Statistics; Mayo Clinic; Rochester Minnesota
2. Behavioral Research Center; Intramural Research Department; American Cancer Society; Atlanta Georgia
3. Department of Medicine; Division of Rheumatology; University of Alabama; Birmingham Alabama
4. Department of Epidemiology; School of Public Health; University of Alabama; Birmingham Alabama
5. Intermountain Healthcare; Institute for Health Care Delivery Research; Salt Lake City Utah