[1] Univ Pecs, Dept Paediat, H-7623 Pecs, Hungary
[2] Univ Zaragoza, Fac Hlth Sci, GENUD Growth Exercise Nutr & Dev Res Grp, Zaragoza, Spain
[3] Natl Inst Hlth Dev, Tallinn, Estonia
[4] Res & Educ Inst Child Hlth, Strovolos, Cyprus
[5] CNR, Unit Epidemiol & Populat Genet, Inst Food Sci, Avellino, Italy
[6] Univ Ghent, Dept Publ Hlth, B-9000 Ghent, Belgium
[7] Univ Gothenburg, Dept Publ Hlth & Community Med, Gothenburg, Sweden
[8] Univ Bremen, Inst Publ Hlth & Nursing Res Ipp, D-28359 Bremen, Germany
[9] Leibniz Inst Prevent Res & Epidemiol BIPS, Bremen, Germany
[10] Univ Bremen, Fac Math & Comp Sci, Inst Stat, D-28359 Bremen, Germany