[1] Harrogate & Dist NHS Fdn Trust, Dept Dermatol, Harrogate, England
[2] Barts Hlth NHS Trust, Dept Dermatol, London, England
[3] British Assoc Dermatologists, Willan House,4 Fitzroy Sq, London, England
[4] Norfolk & Norwich Univ Hosp NHS Fdn Trust, Dept Dermatol, Norwich, Norfolk, England