1. Colorado School of Public Health; Aurora
2. University of Colorado School of Medicine; Aurora
3. VA Palo Alto Health Care System, Palo Alto, and Stanford University School of Medicine; Stanford California
4. Cedars-Sinai Medical Center; Los Angeles California
5. Benaroya Research Institute at Virginia Mason; Seattle Washington
6. Omaha VA Medical Center and University of Nebraska Medical Center; Omaha Nebraska
7. University of Chicago; Chicago Illinois
8. Feinstein Institute for Medical Research; Manhasset New York