1. Service d'Odontologie CHU Clermont‐Ferrand Clermont‐Ferrand France
2. Centre de Recherche en Odontologie Clinique (CROC) EA4847 Université Clermont Auvergne UFR d'Odontologie Clermont‐Ferrand France
3. Faculty of Dentistry, Oral and Craniofacial Sciences King's College London Tower Wing, Guy's Campus London UK
4. Trinity College Dublin School of Dental Sciences and Dublin Dental University Hospital Dublin 2 Ireland
5. Australian Research Centre for Population Oral Health The University of Adelaide Adelaide South Australia Australia
6. Department of Epidemiology and Public Health UCL London UK