1. Rocky Mountain Regional VA Medical Center, Aurora, CO (B.H., F.L.G.).
2. University of Colorado School of Medicine at the Anschutz Medical Campus, Aurora CO (B.H., J.M., E.K., F.L.G.).
3. Northport Veterans Affairs Medical Center, Northport, NY (B.M.C., M.B., A.L.W.S.).
4. Saint Luke’s Mid America Heart Institute/University of Missouri at Kansas City, Kansas City, MO (J.S.).
5. Greater Los Angeles VA Medical Center, Los Angeles, CA (R.E.).
6. University of California, Los Angeles (R.E.).
7. Duke University, Durham, NC (M.B.).
8. VA Boston Healthcare System, West Roxbury, MA (J.A.Q.).
9. Harvard Medical School, Boston, MA (J.A.Q.).
10. Zablocki Veterans Affairs Medical Center, Milwaukee, WI (G.H.A.).
11. Medical College of Wisconsin, Milwaukee (G.H.A.).
12. Cooperative Studies Program Coordinating Center, VA Medical Center, Perry Point, MD (J.F.C.).
13. National Jewish Health, Denver, CO (E.K.).