1. Päijät-Häme Joint Authority for Health and Wellbeing, Department of Oral and Maxillofacial Surgery, Lahti Central Hospital, 15850 Lahti, Finland
2. Cleft Palate and Craniofacial Centre, Department of Plastic Surgery, Helsinki University Hospital, University of Helsinki, 00029 Helsinki, Finland
3. Clinicum, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland