1. Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
2. Department of Primary Health Care in Lapland Central Hospital, Health Centre of Muonio-Enontekiö, Rovaniemi, Finland
3. Health Center of Oulunkaari, Ii, Finland
4. Unit of General Practice, Oulu University Hospital, Oulu, Finland
5. Infrastructure for Population Studies, University of Oulu, Finland
6. Lapland Central Hospital, Rovaniemi, Finland
7. Central Finland Central Hospital, Jyväskylä, Finland
8. Health Center of Selänne, Pyhäjärvi, Finland