1. Children’s Hospital, Department of Children and Adolescents, Helsinki University and Helsinki University Hospital, Finland
2. Nursing Research Center, Helsinki University and Helsinki University Hospital, Finland
3. The Finnish Federation of Oral Health Care Professionals, Helsinki, Finland
4. Minerva Foundation Institute for Medical Research, Helsinki, Finland
5. Children’s Hospital, Department of Oral and Maxillofacial Diseases, Helsinki University and Helsinki University Hospital, Helsinki, Finland