1. Department of Dermatology University of Lübeck Lübeck Germany
2. Lübeck Institute of Experimental Dermatology (LIED) University of Lübeck Lübeck Germany
3. Department of Dermatology Center for Blistering Diseases European Reference Network‐Skin Member University Medical Center Groningen University of Groningen Groningen The Netherlands
4. Dermatology Unit Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
5. Department of Pathophysiology and Transplantation Università degli Studi di Milano Milan Italy
6. Laboratory of Molecular and Cell Biology Istituto Dermopatico dell'Immacolata IDI‐IRCCS Rome Italy
7. Department of Pathology University Medical Center Groningen University of Groningen Groningen The Netherlands
8. University of Birmingham Academic Unit of Ophthalmology Birmingham & Midland Eye Centre Birmingham UK
9. Department of Dermatology, Inselspital Bern University Hospital Bern Switzerland
10. Department of Health Sciences Section of Dermatology AUSL Toscana Centro Rare Diseases Unit European Reference Network‐Skin Member University of Florence Italy
11. Department of Oral Medicine Guy’s & St Thomas’ NHS Foundation Trust London UK
12. Department of Oral Medicine School of Dental Sciences Newcastle University Newcastle upon Tyne UK
13. Department of Dermatology Ospedale Classificato Cristo Re Rome Italy
14. Department of Otorhinolaryngology Amsterdam University Medical Centers University of Amsterdam The Netherlands
15. Dermatology Unit Department of Medicine and Surgery University Hospital University of Parma Italy
16. Department of Ophthalmology Universitätsklinikum Düsseldorf Düsseldorf Germany
17. Department of Dermatology and Allergology Philipps‐Universität Marburg Germany
18. Department of Dermatology Rouen University Hospital Centre de Référence des Maladies Bulleuses Autoimmunes, and INSERM U1234 Normandie University Rouen France
19. Department of Oral Medicine Eastman Dental Institute University College London London UK
20. Department of Dermatology St George Hospital University of New South Wales Sydney New South Wales Australia
21. 2nd Department of Dermatology Autoimmune Bullous Diseases Unit Aristotle University School of Medicine Papageorgiou General Hospital Thessaloniki Greece
22. Department of Dermatology & Allergology University Medical Center Utrecht Utrecht The Netherlands
23. St John’s Institute of Dermatology Guy’s & St Thomas’ NHS Foundation Trust London UK
24. Centre for Host‐Microbiome Interactions Faculty of Dentistry, Oral & Craniofacial Sciences King’s College London London UK
25. Department of Dermatology and Referral Center for Autoimmune Bullous Diseases Groupe Hospitalier Paris Seine‐Saint‐Denis AP‐HP and University Paris 13 Bobigny France
26. Genodermatosis Unit, Genetics and Rare Diseases Research Division Bambino Gesù Children’s Hospital IRCCS Rome Italy