1. Department of Epidemiology University of Pittsburgh, Graduate School of Public Health Pittsburgh PA
2. Harvard Medical School and Brigham and Women's Hospital Boston MA
3. University of Colorado Aurora CO
4. Departments of Epidemiology and Biostatistics University of California San Francisco San Francisco CA
5. Phoenix Veterans Affairs Health Care System Phoenix AZ
6. University of Utah School of Medicine Salt Lake City UT
7. Mayo Clinic Rochester MN
8. Yale University New Haven CT
9. Los Angeles Biomedical Research Institute Torrance CA