1. Yale University School of Medicine, New Haven, Connecticut.
2. Robert Wood Johnson Foundation Clinical Scholars Program, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, and Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut.
3. University of Utah Health Care Drug Information Service and Department of Pharmacotherapy, University of Utah College of Pharmacy, Salt Lake City.
4. Section of General Internal Medicine and Robert Wood Johnson Foundation Clinical Scholars Program, Department of Internal Medicine, Yale School of Medicine; Department of Health Policy and Management, Yale School of Public Health; and the Center for Outcomes Research and Evaluation, Yale-New Haven Hospital, New Haven, Connecticut.