1. Specialist Private Practice Paris France
2. Department of Pediatric Dentistry University of Washington and Seattle Children's Hospital Seattle WA USA
3. Resource Center for Rare Oral Diseases Copenhagen University Hospital Copenhagen Denmark
4. Department of Pediatric Dentistry Faculty of Dentistry Universidad de Valparaíso Valparaíso Chile
5. Paediatric Dentitsry Dublin Dental University HospitalTrinity College DublinThe University of Dublin Dublin Ireland
6. School of Dentistry University of Leeds and Community Dental Service Bradford District Care NHS Trust Leeds UK
7. Division of Orthodontics and Pediatric Dentistry Department of Dental Medicine Karolinska Institutet Huddinge Sweden
8. Center for Pediatric Oral Health Research Stockholm Sweden
9. UWA Dental School University of Western Australia Nedlands WA Australia
10. Adams School of Dentistry University of North Carolina Chapel Hill NC USA
11. Division of Endodontics University of Maryland School of DentistryUMB Baltimore MD USA
12. Department of Oral and Maxillofacial Surgery Resource Centre for Rare Oral Diseases University Hospital in Copenhagen (Rigshospitalet) Copenhagen Denmark
13. Department of Pediatric Dentistry Faculty of Dentistry Hacettepe University Ankara Turkey
14. Faculty of Medicine and Health The University of Sydney Sydney NSW Australia
15. School of Dentistry The University of Queensland St Lucia Qld Australia
16. Faculty of Dentistry College of Health Sciences Obafemi Awolowo University Ile‐Ife Nigeria
17. Specialist Private Practice Bremen Germany
18. Faculty of Medicine and Dentistry University of Alberta Edmonton AB Canada