1. Houston VA Center for Innovations in Quality, Effectiveness and Safety (IQUEST), Michael E. DeBakey VA Medical Center, Houston, Texas2Operative Care Line, Michael E. DeBakey VA Medical Center, Houston, Texas3Michael E. DeBakey Department of Surgery, Baylo
2. Operative Care Line, Nebraska–Western Iowa VA Medical Center, Omaha5Department of Surgery, University of Nebraska Medical Center, Omaha
3. Operative Care Line, Miami VA Healthcare System, Miami, Florida
4. Sinai Center for Geriatric Surgery, Department of Surgery, Sinai Hospital, Baltimore, Maryland
5. Department of Anesthesiology, VA Connecticut Healthcare System, New Haven9Yale University School of Medicine, New Haven, Connecticut
6. Surgical Service, VA Connecticut Healthcare System, New Haven11Department of Surgery, Yale University School of Medicine, New Haven, Connecticut