[1] Natl Inst Hlth & Welf, Dept Chron Dis Prevent, Publ Hlth Genom Unit, Biomedicum 1, Helsinki 00290, Finland
[2] Univ Helsinki, Inst Mol Med FIMM, Biomedicum 2, FIN-00290 Helsinki, Finland
[3] Univ Helsinki, Cent Hosp, Dept Obstet & Gynecol, FIN-00290 Helsinki, Finland
[4] Univ Helsinki, FIN-00290 Helsinki, Finland
[5] Univ Tartu, Estonian Genome Ctr, EE-51010 Tartu, Estonia
[6] Univ Oulu, Inst Hlth Sci, FIN-90570 Oulu, Finland
[7] Univ Helsinki, Hjelt Inst, Dept Publ Hlth, FIN-00014 Helsinki, Finland
[8] Natl Inst Hlth & Welf, Dept Mental Hlth & Subst Abuse Serv, Helsinki 00300, Finland
[9] Natl Inst Hlth & Welf, Dept Chron Dis Prevent, Chron Dis Epidemiol & Prevent Unit, Helsinki 00300, Finland
[10] Univ Helsinki, Dept Gen Practice & Primary Hlth Care, Helsinki 00029, Finland
[11] Vasa Cent Hosp, Vaasa 65130, Finland
[12] Helsingfors Univ, Folkhalsan Res Ctr, Helsinki 00014, Finland
[13] Univ Helsinki, Cent Hosp, Unit Gen Practice, FIN-00290 Helsinki, Finland
[14] Tampere Univ, Univ Tampere, Sch Med, Dept Clin Chem,Fimlab Labs, Tampere 33014, Finland
[15] Univ Turku, Turku Univ Hosp, Res Ctr Appl & Prevent Cardiovasc Med, Dept Clin Physiol & Nucl Med, Turku 20521, Finland
[16] Univ Eastern Finland, Sch Pharm, NMR Metabol Lab, Kuopio 70211, Finland
[17] Tampere Univ, Tampere Univ Hosp, Dept Clin Physiol, Tampere 33014, Finland
[18] Tampere Univ, Univ Tampere, Sch Med, Tampere 33014, Finland
[19] Oulu Univ Hosp, Oulu 90220, Finland
[20] Univ Bristol, Sch Social & Community Med, Bristol BS8 1TH, Avon, England
[21] Univ Bristol, Med Res Council, Integrat Epidemiol Unit, Bristol BS8 1TH, Avon, England