1. Division of Geographic Medicine and Infectious Diseases, Tufts Medical Center, Boston, Massachusetts (S.D.)
2. Rheumatology Section, Veterans Affairs Boston Healthcare System, and Harvard Medical School, Boston, Massachusetts (P.A.M.)
3. Massachusetts Department of Public Health, Boston, Massachusetts (C.M.B.)
4. Harvard Medical School; Department of Medicine, Veterans Affairs Boston Healthcare System; and Veterans Affairs Boston Center for Healthcare Organization and Implementation Research (CHOIR), Boston, Massachusetts (W.B.).