1. VA CT Healthcare System US Department of Veterans Affairs West Haven Connecticut USA
2. Internal Medicine Yale School of Medicine New Haven Connecticut USA
3. Epidemiology and Population Health London School of Hygiene and Tropical Medicine London UK
4. Emory University School of Medicine, Rollins School of Public Health and the Atlanta VA Medical Center Atlanta Georgia USA
5. Stanford Center for Population Health Sciences, Department of Epidemiology and Population Health Stanford School of Medicine Stanford California USA