1. From the Veterans Affairs Outcomes Group, White River Junction, and University of Vermont, Burlington, Vermont; Dartmouth Hitchcock Medical Center, Lebanon, and Dartmouth Institute for Health Policy and Clinical Practice, Hanover, New Hampshire; Cleveland Clinic Foundation, Cleveland, Ohio; University of Southern California Keck School of Medicine, Los Angeles, California; University of North Carolina, Chapel Hill, North Carolina; Fred Hutchinson Cancer Research Center, Seattle, Washington;
2. Denver Department of Veterans Affairs Medical Center and University of Colorado, Denver School of Medicine, Denver, Colorado; and University of Texas M.D. Anderson Cancer Center, Houston, Texas.