Affiliation: | 1. Department of Dermatology, Chang Gung Memorial Hospital, Linkou and College of Medicine, Chang Gung University, Taoyuan, Taiwan;2. Department of Dermatology, University of Marburg, Marburg, Germany;3. Department of Dermatology, Medical University of Graz, Graz, Austria;4. Dermatologist, retired from private practice, Bern, Switzerland;5. Department of Dermatology and Venereology, Zagreb University Hospital Center and School of Medicine, Zagreb, Croatia;6. Department of Dermatology, Venereology and Dermato‐oncology, Semmelweis University, Budapest, Hungary;7. Department of Dermatology, Venerology and Allergology, University of Leipzig, Leipzig, Germany;8. Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK;9. Allergy‐Centre‐Charité, Department of Dermatology and Allergy, Charité‐Universit?tsmedizin Berlin, Berlin, Germany |