1. Research Unit of Oral Health Sciences, University of Oulu, Oulu, Finland
2. Research Unit of Oral Health Sciences, Department of Cariology, Endodontology and Pedodontics, University of Oulu, Oulu, Finland
3. Northern Finland Birth Cohorts, Arctic Biobank, Infrastructure for Population Studies, Faculty of Medicine, University of Oulu, Oulu, Finland
4. Institute of Dentistry, Periodontology and Geriatric Dentistry, University of Oulu, Oulu, Finland