[1] Univ Dundee, Div Canc Res, Dundee, Scotland
[2] Queen Mary Univ London, Barts & London Sch Med & Dent, Ctr Cutaneous Res, London, England
[3] Univ Calif San Francisco, Dept Dermatol, San Francisco, CA 94143 USA
[4] Univ Dundee, Ninewells Hosp & Med Sch, Dundee, Scotland
[5] Thomas Jefferson Univ, Dermatol & Cutaneous Biol, 406 Bluemle,233 S 10th St, Philadelphia, PA 19107 USA