1. Department of Medicine, Division of Cardiovascular Medicine, State University of New York Stony Brook University Medical Center, Stony Brook, NY
2. Department of Family, Population and Preventive Medicine, Stony Brook University Medical Center, Stony Brook, NY
3. Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, NY
4. Department of Medicine, Brown University Rhode Island Hospital, Providence, RI