[1] University College London Medical School,Professor of Dental Public Health, Department of Epidemiology and Public Health
[2] University of Newcastle Dental School,Senior Lecturer in Restorative Dentistry, Department of Restorative Dentistry
[3] University College London Medical School,Senior Lecturer in Epidemiology and Dental Public Health, Department of Epidemiology and Public Health
[4] Research Director,Professor of Restorative Dentistry, Department of Restorative Dentistry
[5] National Centre for Social Research,undefined
[6] University of Newcastle Dental School,undefined