1. Division of Pediatric Dentistry; Department of Dental Medicine; Karolinska Institutet; Huddinge; Sweden
2. Department of Oral and Maxillofacial Surgery; Center of Rare Oral Diseases; Copenhagen University Hospital; Rigshospitalet; Copenhagen; Denmark
3. Department of Pediatric Dentistry; Faculty of Dentistry; Universidad de Valparaiso; Valparaiso; Chile
4. Department of Pedodontics; Institute of Odontology; Gothenburg University; Gothenburg; Sweden
5. Department of Dentistry; Hennepin County Medical Center and; University of Minnesota School of Dentistry; Minneapolis; MN; USA
6. Department of Surgical Sciences; Faculty of Dentistry; Health Sciences Center; Kuwait University; Kuwait City; Kuwait
7. Department of Dentistry; University of Verona; Verona; Italy
8. Department of Endodontics; University of Washington; Seattle; WA; USA
9. Pediatric Dentistry; Leeds Dental Institute and Bradford District Care Trust Salaried Dental Service; Leeds; UK
10. Department of Endodontics; University of Maryland School of Dentistry; Baltimore; MD; USA
11. Orthodontic Clinic; Folktandvården; Uppsala; Sweden
12. Private Practice; University of Queensland; Brisbane; QLD; Australia
13. Private Practice; Amagun; Aichi; Japan