| Affiliation: | 1. The Methodist Hospitals, Inc., Gary and Merrillville, Indiana., USA;1. Department of Cariology, Restorative Sciences, and Endodontics, University of Michigan, Ann Arbor, Mich., USA;1. NPCRDC, 5th Floor, Williamson Building, University of Manchester, Manchester M13 9PL, UK;2. Department of Mental Health Sciences, Royal Free and University College Medical School, UK;3. Department of Primary Care and Population Sciences, Royal Free and University College Medical School, UK;4. National Primary Care Research and Development Centre, University of Manchester, Manchester M13 9PL, UK |
