1. Department of Medicine, Section of Infectious Diseases, Boston University School of Medicine and Boston Medical Center, Boston, MA, USA
2. Department of Medicine, Section of General Internal Medicine, Boston University School of Medicine and Boston Medical Center, Boston, MA, USA
3. Center for Healthcare Organization and Implementation Research, VA Boston Healthcare System, Boston, MA, USA
4. Center for Healthcare Organization and Implementation Research, VA Bedford Healthcare System, Bedford, MA, USA
5. Harvard Medical School, Boston, MA, USA
6. Veterans Affairs Boston Healthcare System, Department of Medicine, Boston, MA, USA