1. University of Colorado; Aurora
2. Cedars-Sinai Medical Center; Los Angeles California
3. Walter Reed National Military Medical Center; Bethesda Maryland
4. Benaroya Research Institute at Virginia Mason; Seattle Washington
5. Omaha VA Medical Center and University of Nebraska Medical Center; Omaha
6. University of Chicago; Chicago Illinois
7. Feinstein Institute for Medical Research; Manhasset New York
8. Colorado School of Public Health; Aurora