[1] INSERM, U781, Paris, France
[2] Univ Paris 05, Paris, France
[3] Fac Med Toulouse, INSERM, U563, F-31073 Toulouse, France
[4] Hop Necker Enfants Malad, Dept Genet, Paris, France
[5] Castres Hosp, Dept Dermatol, Castres, France
[6] Purpan Hosp, Dept Gastroenterol, Toulouse, France
[7] Univ Paris 13, Histol Lab, Paris, France
[8] Asahikawa Med Univ, Dept Dermatol, Asahikawa, Hokkaido, Japan