1. Division of Orthodontics and Pediatric Dentistry, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
2. Specialist Dental Care, Public Dental Health Service, Region Västra Götaland, Sweden
3. Clinical Epidemiology, Department of Medicine, Karolinska Institutet and Centre for Health Equity Studies, Stockholm, Sweden
4. Center for Pediatric Oral Health Research, Stockholm, Sweden