1. Copenhagen Cleft Palate Centre, Copenhagen University Hospital – Rigshospitalet, Copenhagen, Denmark
2. PPR, Rudersdal Municipality, Rudersdal, Denmark
3. Department of Nordic Studies and Linguistics, University of Copenhagen, Copenhagen, Denmark
4. PPR, Roskilde Municipality, Roskilde, Denmark
5. Abzu, Nordhavn, Denmark
6. PPR, Hillerød Municipality, Hillerød, Denmark