Affiliation: | 1. Junior researcher, Department of Oral Development and Orthodontics, Institute of Dentistry, University of Oulu, Oulu, Finland;2. Professor, Department of Oral Development and Orthodontics, Institute of Dentistry, University of Oulu, Oulu, Finland; Oral and Maxillo-Facial Department, Oulu University Hospital, Oulu, Finland;3. Senior research fellow, Department of Community Dentistry, Institute of Dentistry, University of Oulu, Oulu, Finland |