1. Department of Paediatrics, Medical Faculty; University of Pécs; Pécs Hungary
2. Institute for Medical Information Processing Biometrics and Epidemiology, German Centre for Vertigo and Balance Disorders; Ludwig Maximilian University; Munich Germany
3. Section for Epidemiology and Social Medicine; University of Gothenburg; Gothenburg Sweden
4. Department of Intercultural Communication and Management; Copenhagen Business School; Copenhagen Denmark
5. Department of Movement and Sport Sciences, Faculty of Medicine and Health Sciences; Ghent University; Ghent Belgium
6. Unit of Epidemiology and Population Genetics, Institute of Food Sciences; National Research Council; Avellino Italy
7. National Institute for Health Development; Tallinn Estonia
8. Research and Education Institute of Child Health; Strovolos Cyprus
9. Department of Preventive and Predictive Medicine, Nutritional Epidemiology Unit; National Tumor Institute; Milan Italy
10. GENUD (Growth, Exercise, Nutrition and Development) Research Group; University of Zaragoza; Zaragoza Spain
11. Leibniz Institute for Prevention Research and Epidemiology - BIPS; Bremen Germany
12. Institute of Statistics, Faculty of Mathematics and Computer Science; University Bremen; Bremen Germany