1. Unit of Oral Health Sciences, Department of Orthodontics, University of Oulu, Oulu, Finland
2. Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland
3. Clinic of Orthodontics, Lithuanian University of Health Sciences, Kaunas, Lithuania
4. Institute of Biology Systems and Genetics, Veterinary Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania