1. Department of Biostatistics; T.H. Chan School of Public Health; Harvard University; Boston Massachusetts
2. Center for Outcomes Research and Evaluation; Yale-New Haven Hospital; New Haven Connecticut
3. Section of Cardiovascular Medicine; Department of Internal Medicine; School of Medicine; Yale University; New Haven Connecticut
4. Robert Wood Johnson Foundation Clinical Scholars Program; Department of Internal Medicine; School of Medicine; Yale University; New Haven Connecticut
5. Department of Health Policy and Management; School of Public Health; Yale University; New Haven Connecticut