1. Unit of Epidemiology and Population Genetics, Institute of Food Sciences, National Research Council, Avellino, Italy
2. Laboratory of Genetic and Environmental Epidemiology, Research Laboratories, Fondazione di Ricerca e Cura “Giovanni Paolo II”, Università Cattolica, Campobasso, Italy
3. Medizinisches Versorgungszentrum Dr Eberhard &Partner Dortmund, Laboratoriumsmedizin Dortmund, Dortmund, Germany
4. Growth, Exercise, Nutrition and Development (GENUD) Research Group, University of Zaragoza, Zaragoza, Spain
5. Research and Education Institute of Child Health, Strovolos, Cyprus
6. Department of Pediatrics, Queen Silvia Children's Hospital, University of Gothenburg, Gothenburg, Sweden
7. Department of Pediatrics, Medical Faculty, University of Pecs, Pécs, Hungary
8. BIPS – Institute for Epidemiology and Prevention Research, Bremen, Germany
9. Department of Public Health, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
10. Research Foundation – Flanders, Brussels, Belgium
11. National Institute for Health Development, Tallinn, Estonia