[1] Barts Hlth NHS Trust, Dept Dermatol, London, England
[2] Ninewells Univ Hosp, Dept Dermatol, Dundee, Scotland
[3] Univ Manchester, Manchester Acad Hlth Sci Ctr, Inst Inflammat & Repair, Manchester Ctr Hlth Psychol, Manchester, Lancs, England
[4] Kings Coll Hosp NHS Fdn Trust, Dept Dermatol, London, England
[5] Royal Free NHS Fdn Trust, Dept Dermatol, London, England