[1] Univ Helsinki, Inst Behav Sci, Helsinki, Finland
[2] Natl Inst Hlth & Welf, Helsinki, Finland
[3] Helsinki Univ Cent Hosp, Childrens Hosp, Helsinki, Finland
[4] Univ Helsinki, Helsinki, Finland
[5] Univ Helsinki, Dept Obstet & Gynaecol, Helsinki, Finland
[6] Univ Helsinki, Cent Hosp, Helsinki, Finland
[7] Univ Helsinki, Med Genet, Haartman Inst, Helsinki, Finland
[8] Univ Helsinki, Cent Hosp, Dept Clin Chem, Helsinki, Finland
[9] HUSLAB, Helsinki, Finland
[10] Queens Med Res Inst, Univ BHF Ctr Cardiovasc Sci, Endocrinol Unit, Edinburgh, Midlothian, Scotland