1 Social Services, Health Care and Rescue Services Division, Development Support, City of Helsinki, P.O. Box 6008, 00099, Helsinki, Finland. taija.puranen@hel.fi.
2 Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland. taija.puranen@hel.fi.
3 Department of Oral and Maxillofacial Diseases, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
4 Primary Health Care Unit, Kuopio University Hospital, Kuopio, Finland.
5 Folkhälsan Research Center, Helsinki, Finland.
6 Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland.
7 Institute of Dentistry, University of Eastern Finland, Kuopio, Finland.
8 Oral and Maxillofacial Diseases, Kuopio University Hospital, Kuopio, Finland.
9 Department of Medicine, University of Helsinki, Helsinki, Finland.
10 Social Services, Health Care and Rescue Services, Helsinki Hospital, Helsinki, Finland.
11 Population Health Unit, Finnish Institute for Health and Welfare, Helsinki, Finland.
12 Unit of Primary Health Care, Helsinki University Hospital, Helsinki, Finland.
13 Social Services, Health Care and Rescue Services Division, Oral Health Care, City of Helsinki, Helsinki, Finland. riitta.saarela@hel.fi.