[1] Linkoping Univ, Crown Princess Victoria Childrens Hosp, Dept Biomed & Clin Sci, Linkoping, Sweden
[2] Linkoping Univ, Div Pediat, Linkoping, Sweden
[3] Univ S Florida, Hlth Informat Inst, Tampa, FL 33620 USA
[4] UPMC, Childrens Hosp Pittsburgh, Dept Pediat, Pittsburgh, PA USA
[5] Kinder & Jugendkrankenhaus Auf Bult, Diabet Ctr Children & Adolescents, Hannover, Germany
[6] Alberta Childrens Prov Gen Hosp, Dept Pediat, Calgary, AB, Canada
[7] Univ Western Ontario, Dept Paediat, London, ON, Canada
[8] Lawson Hlth Res Inst, London, ON, Canada
[9] Univ Helsinki, Childrens Hosp, Pediat Res Ctr, Helsinki, Finland
[10] Helsinki Univ Hosp, Helsinki, Finland
[11] Univ Helsinki, Fac Med, Res Program Clin & Mol Metab, Helsinki, Finland
[12] Tampere Univ Hosp, Tampere Ctr Child Hlth Res, Tampere, Finland
[13] Folkhalsan Res Ctr, Helsinki, Finland