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-Universitätsmedizin Berlin; Berlin Germany