1. Department of Medicine, School of Medicine, Center for Research on Health Care, Section of Decision Sciences and Clinical Systems Modeling, Department of Health Policy and Management, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
2. Department of Medicine, School of Medicine, Center for Research on Health Care, Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania.
3. Department of Medicine, School of Medicine, Center for Research on Health Care
4. Department of Medicine, School of Medicine, Program in Nursing Science, College of Health Sciences, University of California, Irvine, California.