[1] St Louis Hosp, AP HP, Dept Dermatol, Paris, France
[2] Charite Univ Med Berlin, Dept Dermatol Venerol & Allergol, Berlin, Germany
[3] INSERM, HIPI Immunol Humaine Pathophysiol Immunotherapie, UMR 976, Paris, France
[4] St Louis Hosp, AP HP, Dept Pathol, Paris, France