[1] Queen Mary Univ London, Ctr Mol Oncol, Barts Canc Inst, London, England
[2] Queen Mary Univ London, Ctr Cutaneous Res, Blizard Inst, London, England
[3] Univ Dundee, Ninewells Hosp & Med Sch, Jacqui Wood Canc Ctr, Div Canc Res, Dundee DD1 9SY, Scotland
[4] Thomas Jefferson Univ, Dermatol & Cutaneous Biol, Philadelphia, PA 19107 USA