1 From the Department of Medicine (E.K.) and Cardiovascular Division, Department of Medicine (B.B., G.P.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
2 From the Department of Medicine (E.K.) and Cardiovascular Division, Department of Medicine (B.B., G.P.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA. gpiazza@partners.org.