[1] Harvard Med Sch, Massachusetts Gen Hosp, Dept Dermatol, Boston, MA 02115 USA
[2] Harvard Pilgrim Hlth Care Inst, Dept Populat Med, Boston, MA 02215 USA
[3] Weill Cornell Med Coll, Dept Dermatol, New York, NY USA
[4] Queen Mary Univ London, Barts & London Sch Med & Dent, Blizard Inst, Ctr Cell Biol & Cutaneous Res, London, England
[5] Univ Calif San Francisco, Dept Dermatol, San Francisco, CA 94143 USA
[6] QIMR Berghofer Med Res Inst, Brisbane, Qld, Australia
[7] Univ Manchester, Canc Res UK Manchester Inst, Manchester, Lancs, England