1. Division of Cardiovascular Medicine, Department of Internal Medicine; University of Louisville; Louisville Kentucky
2. Department of Internal Medicine; University of Toledo Medical Center; Toledo Ohio
3. Department of Internal Medicine; Cleveland Clinic; Cleveland Ohio
4. Division of Cardiovascular Medicine, Department of Internal Medicine; Saint Vincent Mercy Hospital; Toledo Ohio
5. Division of Cardiovascular Medicine, Department of Internal Medicine; University of Iowa; Iowa City Iowa
6. Division of Cardiovascular Medicine, Department of Internal Medicine; St Lukes Roosevelt Hospital; New York