1. Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
2. Department of Environmental Health Sciences, Yale School of Public Health, New Haven, Connecticut
3. Section of General Medicine and the National Clinician Scholars Program, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
4. Department of Health Policy and Management, Yale School of Public Health, New Haven, Connecticut
5. Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut