1. Department of Sports and Exercise Medicine, Oulu Deaconess Institute Foundation sr., Albertinkatu 18A, Oulu 90100, Finland
2. Center for Life Course Health Research, Faculty of Medicine, University of Oulu, P.O. Box 8000, Oulu FI-90014, Finland
3. Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, P.O. Box 8000, Oulu FI-90014, Finland
4. Geography Research Unit, P.O. BOX 8000, University of Oulu, Oulu FI-90014, Finland
5. Medical Research Center Oulu, Oulu University Hospital and University of Oulu, P.O. Box 8000, Oulu FI-90014, Finland
6. Center for Environmental and Respiratory Health Research, University of Oulu, P.O. Box 5000, Oulu FI-90014, Finland
7. Centre for Military Medicine, The Finnish Defense Forces, P.O. Box 50, Tukholmankatu 8 A, Helsinki FI-00301, Finland
8. Department of Diagnostic Radiology, Oulu University Hospital, P.O. Box 50, Oulu 90029, Finland