1. Centre de référence des maladies bulleuses auto-immunes, Department of Dermatology, Rouen University Hospital, Normandie University, INSERM U1234, Rouen, France
2. Department of Biostatistics and Clinical Research, Rouen University Hospital, Rouen, France
3. Centre de référence des maladies bulleuses auto-immunes, Avicenne Hospital, Assistance Publique–Hôpitaux de Paris, Department of Dermatology, University of Paris 13, Bobigny, France
4. Department of Dermatology, University of Saint Etienne, Saint Etienne, France
5. Department of Dermatology, Bichat Hospital, University of Paris X, Paris, France
6. Department of Dermatology, University of Toulouse, Toulouse, France
7. Department of Dermatology, University of Amiens, Amiens, France
8. Assistance Publique des Hôpitaux de Marseille, Department of Dermatology, Aix Marseille University, UMR 911, INSERM CRO2, Marseille, France
9. Department of Dermatology, St Louis Hospital, Paris 7 Sorbonne Paris Cité University, Paris, France
10. Department of Dermatology, University of Lille, Lille, France
11. Department of Dermatology, University of Reims, Reims, France
12. Department of Dermatology, Assistance Publique–Hôpitaux de Paris, Henri Mondor Hospital, Créteil, France
13. Department of Dermatology, Dijon University Hospital, Dijon, France
14. Department of Dermatology, University of Nantes, Nantes, France
15. Department of Dermatology, University of Rennes, Rennes, France
16. Department of Dermatology, Centre Hospitalier Lyon Sud, Pierre Bénite, Lyon, France
17. Department of Dermatology, University of Angers, Angers, France
18. Department of Dermatology, University of Clermont-Ferrand, Clermont-Ferrand, France
19. Department of Dermatology, University of Limoges, Limoges, France
20. Department of Dermatology, Le Mans General Hospital, Le Mans, France
21. Department of Dermatology, Edouard Herriot Hospital, Lyon Claude Bernard University, Lyon, France
22. Department of Dermatology, University of Paris V, Paris, France
23. Department of Dermatology, Brest University Hospital, Brest, France
24. Department of Dermatology, Tours University Hospital, Tours, France
25. Department of Dermatology, University of Bordeaux, Bordeaux, France
26. Department of Dermatology, University of Montpellier, Montpellier, France
27. Department of Internal Medicine, Brest University Hospital, Brest, France