1. Department of Occupational and Environmental Medicine, Bavarian Health and Food Safety Authority, Munich, Germany
2. Institute for Medical Information Processing, Biometry and Epidemiology (IBE), Ludwig-Maximilians-University, Munich, Germany
3. Bavarian Health and Food Safety Authority, Oberschleißheim, Germany
4. Dr. von Haunersches Children’s Hospital and Polyclinic, Ludwig-Maximilians-University, Munich, Germany
5. Helmholtz Zentrum München/German Research Center for Environmental Health, Institute for Asthma and Allergy Prevention, Neuherberg, Germany
6. Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Clinic of the University of Munich, Munich, Germany