1 Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. Electronic address: cmccarthy37@partners.org.
2 Heart and Vascular Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
3 Department of Pharmacy, Massachusetts General School, Boston, MA, USA.
4 Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
5 Division of Hematology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.