1 Division of Cardiovascular Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA.
2 Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA.
3 Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA. Electronic address: michelle.kittleson@cshs.org.