1. Institute of Epidemiology I; Helmholtz Zentrum München-German Research Center for Environment Health; Neuherberg Germany
2. Faculty of Medicine; Ludwig-Maximilians-University of Munich; Munich Germany
3. Division of Metabolic and Nutritional Medicine; Dr. von Hauner Children's Hospital; University of Munich Medical Center; Munich Germany
4. Department of Pediatrics; Marienhospital; Wesel Germany
5. Dr. von Hauner Children's Hospital; Ludwig-Maximilians University of Munich; Munich Germany
6. Department of Pediatrics; Technical University of Munich; Munich Germany
7. IUF-Leibniz Research Institute for Environmental Medicine; Germany and Medical Faculty; University of Düsseldorf; Düsseldorf Germany