1. Department of DermatologyRuprecht‐Karls‐University Heidelberg Germany
2. Department of DermatologyPhilipps‐University Marburg Germany
3. Department of DermatologyEberhard‐Karls‐University Tübingen Germany
4. Department of DermatologyUniversity of Zurich Switzerland
5. Department of DermatologyUniversity of Verona Italy
6. Immunodeficiency Centre for WalesUniversity Hospital of Wales Cardiff UK
7. Department of DermatologySemmelweis University Budapest Hungary
8. Department of DermatologyJohannes Gutenberg‐University Mainz Germany
9. Department of DermatologyMedical University of Vienna Austria
10. Department of DermatologyUniversity of Lübeck Germany