Affiliation: | aColorado Health Outcomes Program, Aurora, CO bUniversity of Colorado at Denver and Health Sciences Center, Denver, CO cDenver Veterans Affairs Medical Center, Denver, CO dMetro Health Hospital, Grand Rapids, MI eNational Surgical Quality Improvement Program, Office of Patient Care Services, Department of Veterans Affairs, Aurora, CO fDepartment of Surgery, Atlanta Veterans Affairs Medical Center, Emory University, Atlanta, GA gVA Boston Healthcare System, Department of Surgery, Harvard Medical School, Brigham and Women’s Hospital, Boston, MA. |