1 Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA; Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA.
2 Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA; Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA. Electronic address: jhuffman@partners.org.
3 Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA; Cardiology Section, Department of Medicine, VA Boston Healthcare System, Boston, Massachusetts, USA.