[1] Oulu Univ Hosp, Ctr Life Course Hlth Res, Med Res Ctr Oulu, Oulu, Finland
[2] Univ Oulu, POB 5000, FI-90014 Oulu, Finland
[3] Oulu Univ Hosp, Med Res Ctr Oulu, Dept Phys & Rehabil Med, Oulu, Finland
[4] Univ Oulu, Fac Biochem & Mol Med, Oulu, Finland
[5] Oulu Univ Hosp, Unit Primary Care, Oulu, Finland
[6] Univ Oulu, Dept Anat & Cell Biol, Oulu, Finland
[7] Univ Oulu, Surg Clin, Med Res Ctr, Oulu, Finland
[8] Oulu Univ Hosp, Oulu, Finland
[9] Finnish Inst Occupat Hlth, Oulu, Finland