1. U976 HIPI Unit Institut de Recherche Saint‐Louis Université de ParisInserm Paris France
2. General Pediatrics and Pediatric Emergency Department Jean Verdier Hospital Assistance Publique‐Hôpitaux de Paris (APHP) Bondy France
3. Université Paris Saclay Gif‐sur‐Yvette France
4. Department of Dermatology University of Duesseldorf Duesseldorf Germany
5. Department of Dermatology, Venereology, and Oncodermatology Medical Faculty University of Pécs Pécs Hungary
6. Clinical Research Center Centre Hospitalier de Versailles Le Chesnay France
7. Laboratoire d'Immunologie et histocompatibilité Hôpital Saint‐Louis Assistance Publique‐Hôpitaux de Paris (AP‐HP) Paris France