1. Department of Dermatology University Hospital of Oulu Oulu Finland
2. Medical Research Center, PEDEGO Research Group University of Oulu Oulu Finland
3. Infrastructure for Population Studies, Faculty of Medicine University of Oulu Oulu Finland
4. Medical Research Center, Clinical Neuroscience Research Group University of Oulu Oulu Finland
5. Department of Geriatrics Oulu University Hospital of Oulu Oulu Finland
6. Faculty of Medicine, Center for Life Course Health Research University of Oulu Oulu Finland
7. Healthcare and Social Services of Selänne Pyhäjärvi Finland