1. Division of Cardiovascular Medicine, Boston Medical Center , 11234 Anderson St, Loma Linda, CA 92354 , USA
2. Boston University School of Medicine , 233 Bay State Road, Boston, MA 02215 , USA
3. Division of Internal Medicine, University of Kansas Medical Center , 4000 Cambridge St., Kansas City, KS 66160 , USA
4. Division of Cardiology, Loma Linda University , 11234 Anderson St, Loma Linda, CA 92354 , USA
5. Division of Cardiovascular Medicine, Gill Heart Institute, University of Kentucky , 800 Rose Street, First Floor, Suite G100, Lexington, KY 40536 , USA
6. Division of Cardiology, University of Texas Southwestern , 5323 Harry Hines Blvd, Dallas, TX 75390 , USA
7. Division of Cardiology, Cleveland Clinic , 9500 Euclid Ave. Cleveland, Ohio 44195 , USA
8. Division of Cardiology, Christus Good Shepherd Medical Center, 707 East Marshall Avenue, Longview, TX 75604, USA