1. Departments of Health Policy and Management and Medicine Johns Hopkins Bloomberg School of Public Health and School of Medicine Baltimore Maryland USA
2. Department of Health Policy and Management Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA
3. MedStar Health Baltimore Maryland USA
4. Department of Health, Behavior, and Society Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA
5. Johns Hopkins School of Nursing Baltimore Maryland USA
6. Institute of Health Policy, Management, & Evaluation University of Toronto and Michael Garron Hospital Toronto Canada
7. Johns Hopkins Community Physicians Baltimore Maryland USA