1. Subspecialty Service, Department of Veterans Affairs Medical Center, Augusta, GA, USA
2. Department of Medicine, Georgia Regents University, Augusta, GA, USA
3. Center of Innovation for Complex Chronic Healthcare, Edward J. Hines, Jr. VA Hospital, Hines, IL, USA
4. Department of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, Chicago, IL, USA
5. Stritch School of Medicine, Loyola University, Maywood, IL, USA
6. Durham VA Medical Center, Durham, NC, USA