1. Yale School of Medicine, New Haven, Connecticut.
2. Robert Wood Johnson Foundation Clinical Scholars Program, Yale School of Medicine, New Haven, Connecticut, and Veterans Affairs Connecticut Healthcare System, West Haven.
3. Robert Wood Johnson Foundation Clinical Scholars Program and Section of General Internal Medicine, Department of Internal Medicine, Yale School of Medicine; Department of Health Policy and Management, Yale School of Public Health; and Center for Outcomes Research and Evaluation, Yale-New Haven Hospital, New Haven, Connecticut.