1 Department of Cardiology, Cedars-Sinai Medical Center and the David Geffen School of Medicine, University of California, Los Angeles, California. Electronic address: kaul@cshs.org.
2 University of Mississippi Medical Center, Jackson, Mississippi.
3 Department of Cardiology and Berlin Institute of Health Center for Regenerative Therapies, Germany, and German Centre for Cardiovascular Research partner site Berlin, Germany and Charité Universitätsmedizin Berlin, Germany.
4 University of Mississippi Medical Center, Jackson, Mississippi; Baylor Scott and White Research Institute, Baylor Scott and White Health, Dallas, Texas.