1. Department of Dermatology, Medical Center – University of Freiburg, Faculty of Medicine, Freiburg, Germany
2. Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
3. Department of Dermatology, Allergy and Dermatosurgery, Helios University Hospital Wuppertal, University Witten/Herdecke, Wuppertal, Germany
4. Department of Dermatology, Royal Melbourne Hospital, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Australia