1. School of Dental Medicine, University at Buffalo, The State University of New York; Buffalo NY USA
2. Global Oral Health, Institute of Dentistry, Bart's and The London School of Medicine and Dentistry; Queen Mary, University of London; London UK
3. School of Public Health; University of Maryland, College Park; MD USA
4. Health Policy Institute; American Dental Association; Chicago IL USA
5. Department of Epidemiology and Public Health; University College London; London UK
6. Department of Dental Public Health; University of Pittsburgh; Pittsburgh PA USA