1 Department of Medicine, Division of Cardiology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
2 Department of Medicine, Division of Cardiology, Emory University, Atlanta, Georgia, USA.
3 Department of Medicine, Section of Cardiovascular Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston Medical Center, Boston, Massachusetts, USA; Amyloidosis Center, Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA.
4 Department of Medicine, Section of Cardiovascular Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston Medical Center, Boston, Massachusetts, USA; Amyloidosis Center, Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA. Electronic address: omar.siddiqi@bmc.org.