1. MD Anderson Cancer Center; University of Texas; Houston Texas
2. Detroit Medical Center; Cardiovascular Institute; Detroit Michigan
3. Division of Cardiovascular Diseases; Mayo Clinic; Rochester Minnesota
4. Division of Cardiology; University of California at Los Angeles; Los Angeles California
5. School of Medicine; Arkansas Heart Hospital; Little Rock Arkansas
6. Department of Cardiology; Koc University; Istanbul Turkey
7. Department of Cardiology; University of Texas Health Science Center; Houston Texas
8. Department of Cardiology; University of Arkansas for Medical Sciences; Little Rock Arkansas
9. Athens Medical School; Hippokration General Hospital; Athens Greece
10. Division of Cardiovascular Disease; University of Alabama at Birmingham; Birmingham Alabama
11. Department of Cardiology; Citizens Memorial Hospital; Bolivar Missouri
12. Department of Medicine; University of Missouri; Columbia Missouri