1. Department of Plastic Surgery, Cleft Palate and Craniofacial Center, Helsinki University Hospital, Helsinki, Finland;
2. Cleft Palate Center, Aarhus, Denmark;
3. Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Rikshospitalet, Oslo, Norway;
4. Dental School, University of Manchester, Manchester, UK;
5. Copenhagen Cleft Palate Center, University Hospital of Copenhagen, Denmark;
6. Division of Orthodontics, Department of Dental Medicine, Stockholm Craniofacial Team, Karolinska Institutet, Stockholm, Sweden;
7. Orthodontic clinic, University Clinics of Odontology Gothenburg, Sweden;
8. Dentofacial Orthopedics, Maxillofacial Unit, University Hospital, Linköping, Sweden;
9. Oral Health Center of Excellence/Western Norway, Bergen, Norway;
10. Greater Manchester Cleft Unit, Royal Manchester Children’s Hospital, Manchester, UK;
11. Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Rikshospitalet and Statped Sørøst, Oslo, Norway