1. Division of Orthodontics and Paediatric Dentistry, Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
2. Department of Endodontics, Public Dental Health Services, Eastmaninstitutet, Stockholm, Sweden
3. Centre of Paediatric Oral Health, Huddinge, Sweden
4. Department of Odontology, Umeå University, Umeå, Sweden
5. Wallenberg Centre for Molecular Medicine, Umeå University, Umeå, Sweden
6. Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden