Affiliation: | aDepartment of Surgery, Dartmouth Medical School, Lebanon, NH;bWhite River Junction VA Medical Center, White River Junction, VT;cDepartment of Preventive Medicine and Biometrics and Health Outcomes Program, University of Colorado Denver, Denver CO;dDenver VA Medical Center, Denver, CO;eColorado Health Outcomes Program, University of Colorado Denver, CO;fDepartment of Medicine, University of Washington, Seattle, WA |