Med Care 2017 03;55(3):229-235
*Department of Health Policy and Management, Harvard T.H. Chan School of Public Health †Department of Medicine, Division of General Internal Medicine, Brigham and Women's Hospital, Cambridge ‡Department of Health Policy and Management, Harvard T.H. Chan School of Public Health §Department of Medicine, Division of Cardiovascular Medicine, Brigham and Women's Hospital ∥Department of Biostatistics, Harvard T.H. Chan School of Public Health ¶Department of Medicine, Division of General Internal Medicine, Brigham and Women's Hospital, Boston #Division of Medicine, Veterans Affairs Boston Healthcare System, Cambridge, MA.