1. Cardiac Ultrasound Laboratory and Cardiovascular Research Center, Cardiology Division, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts;
2. DHU Ageing-Thorax-Vessel-Blood, Hôpital Henri Mondor, Assistance Publique-Hôpitaux de Paris, Créteil, France;
3. Research Division, Joslin Diabetes Center, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts;
4. Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; and
5. Anesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts