1. Department of Cardiology, Heart and Vascular Institute, West Virginia University, Morgantown, West Virginia, USA
2. Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa, USA
3. Department of Internal Medicine and *department of Infectious Diseases, Bassett Medical Center, New York, New York, USA
4. Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
5. Department of Internal Medicine, St Luke’s University Hospitals, Allentown, Pennsylvania, USA