1. Department of Occupational and Social Medicine; Medical Faculty Carl Gustav Carus; Technical University of Dresden; Germany
2. Department of Dermatology; Medical Faculty Carl Gustav Carus; Technical University of Dresden; Germany
3. Institute for Medical Informatics, Biometrics and Epidemiology; Medical Faculty of the University of Erlangen/Nuremberg; Germany
4. Center for Evidence-Based Health Care; Medical Faculty Carl Gustav Carus; Technical University of Dresden; Germany