[1] Univ Manchester, Dermatol Ctr, Salford Royal NHS Fdn Trust, Manchester Acad Hlth Sci Ctr, Salford M6 8HD, Lancs, England
[2] Royal Victoria Infirm, Dept Dermatol, Newcastle Upon Tyne NE1 4LP, Tyne & Wear, England
[3] Guys & St Thomas NHS Fdn Trust, St Johns Inst Dermatol, London SE1 9RT, England
[4] British Assoc Dermatologists, Willan House,4 Fitzroy Sq, London W1T 5HQ, England
[5] St Vincents Univ Hosp, Elm Pk, Dublin, Ireland
[6] Glan Clwyd Gen Hosp, Sarn Lane, Rhyl LL18 5UJ, Wales