1. VA Information Resource Center, Edward Hines Jr. VA Hospital, US Department of Veterans Affairs, Hines, Illinois
2. Public Health Services, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois
3. Durham VA Medical Center, Department of Veterans Affairs, North Carolina
4. Duke University School of Medicine, Division of General Internal Medicine, Durham, North Carolina
5. Center of Innovation for Complex Chronic Healthcare, Edward Hines, Jr. VA Hospital, US Department of Veterans Affairs, Hines, Illinois
6. Department of Medicine, College of Medicine and Department of Health Policy and Administration, School of Public Health, University of Illinois, Chicago