1. Department of Paediatric Dentistry; School of Dentistry; University of Leeds; Leeds UK
2. Departments of Orthodontics; Eastman Dental Hospital and Croydon University Hospital; London UK
3. Department of Restorative Dentistry; Melbourne Dental School; University of Melbourne; Melbourne Vic. Australia
4. Resource Center for Rare Oral Disease; University Hospital Copenhagen, Rigshospitalet; Copenhagen Denmark
5. Department of Paediatric Dentistry; School of Dentistry; Universidade Luterna do Brasil; Porto Alegre Brazil
6. Lakeside Endodontics; University of Washington and Seattle Children's; Seattle WA USA
7. Faculty of Dentistry; Oral Health, Western Sydney LHD; University of Sydney; Sydney NSW Australia
8. Division of Periodontology; Faculty of Medicine and Dentistry; School of Dentistry; University of Alberta; Edmonton AB Canada
9. Department of Dentistry; The Hospital for Sick Children and School of Graduate Studies; University of Toronto; Toronto ON Canada
10. Department of Restorative Dentistry; King's College Dental Hospital; Denmark Hill London UK
11. Orthodontic Clinic, Tandregleringen; Huddinge, Stockholm Sweden
12. State Key Laboratory of Military Stomatology; Department of General Dentistry and Emergency; School of Stomatology; The Fourth Military Medical University; Xian China
13. Tsukiboshi Dental Clinic; Aichi Japan
14. Department of Surgical Sciences; Faculty of Dentistry; Health Sciences Center; Kuwait University; Kuwait Kuwait