1. Department of Dermatology and Allergy; Technical University of Munich; Munich Germany
2. Department of Medical Informatics, Biometry and Epidemiology (IBE); Ludwig-Maximilians-Universitaet; Munich Germany
3. Research Unit of Molecular Epidemiology; Helmholtz Zentrum München; Neuherberg Germany
4. Institute of Epidemiology II; Helmholtz Zentrum München; Neuherberg Germany