[1] Humboldt Univ, Charite, Inst Human Genet, D-13353 Berlin, Germany
[2] Max Delbruck Ctr Mol Med, Gene Mapping Ctr, Berlin, Germany
[3] Humboldt Univ, Charite, Dept Pediat Pneumol & Immunol, D-13353 Berlin, Germany
[4] St Bartholomews & Royal London Sch Med & Dent, Acad Dept Dermatol, London, England
[5] Barnet Gen Hosp, Dept Dermatol, Barnet, Herts, England
[6] Hop Claude Huriez, Serv Dermatol A, Lille, France