1 Division of Cardiovascular Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA. Electronic address: Lisa_rose-jones@med.unc.edu.
2 Division of Cardiovascular Medicine, University of Florida, Gainesville, Florida, USA.
3 Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
4 Division of Cardiovascular Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
5 MetroHealth Medical Center Heart, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.
6 Cardiology Division, Massachusetts General Hospital, Boston, Massachusetts, USA.
7 Division of Cardiovascular Medicine, University of Virginia, Charlottesville, Virginia, USA.
8 Keck School of Medicine at the University of Southern California, Los Angeles, California, USA.
9 Medstar Heart and Vascular Institute, Georgetown University, Washington, DC, USA.