1 Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA. Electronic address: https://twitter.com/JAAlvarezMD.
2 Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA. Electronic address: sdivakaran@bwh.harvard.edu.