1 Dermatology Department, AP-HP, Henri Mondor Hospital, Creteil, France; Dermatology Department, AP-HP, Cochin Hospital, Paris, France, Université de Paris, Paris, France.
2 Oncology Department, Georges Pompidou Hospital, Paris, France.
3 Dermatology Department, AP-HP, Cochin Hospital, Paris, France, Université de Paris, Paris, France.
4 Pathology Department, Cochin Hospital, AP-HP, AP-HP. Centre-Université de Paris, Paris, France.
5 Dermatology Department, Lyon Hospital, Lyon, France; Reference Center for Toxic Bullous Dermatoses and Serious Toxidermia TOXIBUL, Creteil, France.
6 Dermatology Department, AP-HP, Henri Mondor Hospital, Creteil, France; Reference Center for Toxic Bullous Dermatoses and Serious Toxidermia TOXIBUL, Creteil, France; EA7379 EpidermE, Créteil, France.
7 Dermatology Department, AP-HP, Cochin Hospital, Paris, France, Université de Paris, Paris, France. Electronic address: nicolas.dupin@aphp.fr.