1. Department of Dermatology, Allergology and Venerology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
2. Institute of Medical Psychology and Behavioral Immunobiology & Institute for Medical Education, Center for Translational Neuro- and Behavioral Sciences, Medical Faculty, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
3. Department of Endocrinology, Diabetes and Metabolism, University Hospital Essen, University of Duisburg-Essen, Essen, Germany