[1] Kings Coll London, Sch Med, St Johns Inst Dermatol, Div Genet & Mol Med,Genet Skin Dis Grp, London WC2R 2LS, England
[2] All India Inst Med Sci, Dept Dermatol, New Delhi, India
[3] Dept Dermatol, Hyderabad, Andhra Pradesh, India
[4] Univ Uppsala Hosp, Dept Med Sci, Uppsala, Sweden
[5] New Groote Schuur Hosp, Div Dermatol, Durban, South Africa
[6] Hokkaido Univ, Grad Sch Med, Dept Dermatol, Sapporo, Hokkaido, Japan
[7] Inst Dermatol, Bangkok, Thailand