New York Medical College - Department of Cardiology, Cook County Hospital - Department of Medicine, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin - Department of Cardiology, New York Medical College - Department of Cardiology, West Virginia University - Department of Medicine, University of Brescia - Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, Papa Giovanni XXIII Hospital - Cardiology Division, New York Medical College - Department of Cardiology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Heart Failure Center, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Heart Failure Center, Ronald Reagan UCLA Medical Center - Division of Cardiology and University of Mississippi - Department of Medicine