[1] Univ Palermo, Dept Hlth Promot Mother & Child Care, Internal Med & Med Specialties, Palermo, Italy
[2] Spaarne Gasthuis, Dept Internal Med, Hoofddorp, Netherlands
[3] Spaarne Gasthuis Acad, Hoofddorp, Netherlands
[4] Univ Leuven, KU Leuven, Ctr Environm & Hlth, Dept Publ Hlth & Primary Care, Leuven, Belgium
[5] Med Univ Silesia, Dept Epidemiol, Katowice, Poland
[6] Univ Palermo, Dept Psychol Educ Sci & Human Movement, Palermo, Italy
[7] Katholieke Univ Leuven, Leuven Child & Hlth Inst, Leuven, Belgium
[8] Katholieke Univ Leuven, Dept Dev & Regenerat, Leuven, Belgium
[9] Spaarne Gasthuis, Dept Pediat, Haarlem, Netherlands
[10] Spaarne Gasthuis, Dept Pediat, Hoofddorp, Netherlands