1. VA Nebraska–Western Iowa Health Care System and University of Nebraska Medical Center Omaha Nebraska
2. University of Nebraska Medical Center Omaha
3. Salt Lake City VA Medical Center and University of Utah Salt Lake City
4. University of Nebraska Medical Center, Omaha, and FORWARD, the National Data Bank for Rheumatic Diseases Wichita Kansas
5. Corporal Michael J. Crescenz VA Medical Center and University of Pennsylvania Philadelphia