1. Department of Oral Health Policy and Epidemiology, Harvard School of Dental Medicine, Boston, Massachusetts
2. Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
3. Preventive and Restorative Dental Sciences, Healthforce Center, Philip R. Lee Institute for Health Policy Studies, University of California, San Francisco School of Dentistry, San Francisco
4. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts