1 Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts.
2 Department of Medicine, Saint Louis University, St Louis, Missouri.
3 Division of Cardiology, University of Washington, Seattle, Washington.
4 Portland Veterans Affairs Medical Center and Patient-Centered Education and Research, Portland, Oregon.
5 University of Alabama, Birmingham, Alabama.
6 University of Michigan Frankel Cardiovascular Center, Ann Arbor, Michigan.
7 University of Michigan Frankel Cardiovascular Center, Ann Arbor, Michigan; Ann Arbor Veterans Affairs Health System, Ann Arbor, Michigan.
8 Case Western Reserve University School of Medicine and Harrington Heart and Vascular Institute, University Hospitals, Cleveland, Ohio.
9 University of Pennsylvania, Philadelphia, Pennsylvania.
10 Mayo Clinic, Rochester, Minnesota.
11 Columbia University Medical Center/New York Presbyterian Hospital, New York, New York.
12 American College of Cardiology, Washington, DC.
13 University of Iowa, Iowa City, Iowa.
14 Department of Medicine, Saint Louis University, St Louis, Missouri; Department of Bioethics and Humanities, University of Washington, Seattle, Washington.