1. Department of Ear and Oral Diseases, Tampere University Hospital
2. Department of Maxillofacial Surgery and Oral Diseases, Satakunta Central Hospital, Pori
3. Faculty of Medicine and Health Technology, Tampere University
4. Department of Paediatrics, Tampere University Hospital
5. Tampere Center for Child Health Research, Tampere University and Tampere University Hospital
6. Department of Clinical Neurophysiology, Tampere University Hospital
7. Faculty of Health Sciences, University of Eastern Finland, Finland