[1] Natl Inst Hlth & Welf, Diabet Prevent Unit, Helsinki 00271, Finland
[2] Univ Helsinki, Cent Hosp, Childrens Hosp, FIN-00014 Helsinki, Finland
[3] Univ Helsinki, FIN-00014 Helsinki, Finland
[4] Univ Helsinki, Dept Behav Sci, FIN-00014 Helsinki, Finland
[5] LIKES Res Ctr Sport & Hlth Sci, Jyvaskyla, Finland
[6] Univ Helsinki, Dept Gen Practice & Primary Hlth Care, FIN-00014 Helsinki, Finland
[7] Univ Helsinki, Cent Hosp, Unit Gen Practice, Helsinki, Finland
[8] Vasa Cent Hosp, Vaasa, Finland
[9] Folkhalsan Res Ctr, Helsinki, Finland
[10] Oulu Univ Hosp, Med Res Ctr Oulu, Dept Obstet & Gynecol, Oulu, Finland
[11] Univ Oulu, Oulu, Finland