1. Center for Health Equity Research and Promotion Corporal Crescenz VA Medical Center Philadelphia Pennsylvania USA
2. Division of General Internal Medicine, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
3. Leonard Davis Institute of Health Economics University of Pennsylvania Philadelphia Pennsylvania USA
4. Center for Health Equity Research and Promotion Pittsburgh VA Medical Center Pittsburgh Pennsylvania USA
5. Department of Veterans Affairs, Veterans Health Administration Office of Geriatrics and Extended Care Washington DC USA
6. U.S. Department of Veterans Affairs, Veterans Health Administration Innovation Ecosystem Washington DC USA
7. Health Economics Resource Center Palo Alto VA Medical Center Palo Alto California USA
8. Stanford Surgery Policy Improvement Research and Education Center Stanford University Stanford California USA