1. Division of Cardiovascular Disease; University of Alabama at Birmingham; Birmingham AL USA
2. Division of Cardiology; Cheng Hsin General Hospital; Taipei Taiwan
3. Cardiology Department; Istanbul Medeniyet University; Istanbul Turkey
4. Division of Internal Medicine; University of Alabama at Birmingham; Birmingham AL USA
5. Department of Internal Medicine; University of Missouri-Kansas City; Kansas City MO USA
6. Department of Internal Medicine; Michigan State University; East Lansing MI USA