1 Department of Dermatology, Reims University Hospital, Centre de Référence des Maladies Bulleuses Auto-immunes, MALIBUL and EA7509, IRMAIC, Université Reims-Champagne Ardenne, Reims, France.
2 Department of Dermatology, Saint-Louis Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France.
3 Department of Dermatology, Groupe Hospitalier Paris Seine-Saint-Denis, Centre de Référence des Maladies Bulleuses Auto-immunes, MALIBUL and INSERM UMR1125, Bobigny, France.
4 Department of Dermatology, Henri-Mondor University Hospital, Assistance Publique - Hôpitaux de Paris, University Paris Est Créteil, EpidermE, Créteil, France.
5 Department of Dermatology, Rouen University Hospital, Centre de Référence des Maladies Bulleuses Auto-immunes, MALIBUL and INSERM U1234, Normandie University, Rouen, France.
6 Department of Dermatology, Hospices Civils de Lyon, Lyon Sud Hospital, Lyon, France.
7 Department of Dermatology, Lille University Hospital, Lille, France; Department of Dermatology, Dunkerque Hospital, Dunkerque, France.
8 Department of Dermatology, Larrey Hospital, Toulouse, France.
9 Department of Dermatology, Augustin-Morvan Hospital, Brest, France.
10 Department of Dermatology, Angers Hospital, Angers, France.
11 Department of Dermatology, Saint-Étienne Hospital, Saint-Étienne, France.
12 Department of Dermatology, Édouard Herriot Hospital, Lyon, France.
13 Department of Dermatology, Lille University Hospital, Lille, France.
14 Department of Epidemiology, Faculty of Medicine, Sorbonne University, Paris, France.
15 Department of Dermatology, Reims University Hospital, Centre de Référence des Maladies Bulleuses Auto-immunes, MALIBUL and EA7509, IRMAIC, Université Reims-Champagne Ardenne, Reims, France. Electronic address: mviguier@chu-reims.fr.