1. Oral Health Policy and Epidemiology Department; Harvard School of Dental Medicine; Boston MA USA
2. Department of Diagnostic Sciences; University of Texas School of Dentistry at Houston; Houston TX USA
3. Department of Preventive and Restorative Dental Sciences; School of Dentistry-University of California; San Francisco CA USA
4. Department of Periodontology; Academic Centre for Dentistry (ACTA); Amsterdam The Netherlands
5. Creighton University School of Dentistry; Omaha NE USA
6. Tufts University School of Dental Medicine; Boston MA USA
7. Center for Cognitive Studies in Medicine and Public Health; New York Academy of Medicine; New York NY USA