1. Department of Dermatology Massachusetts General Hospital, Harvard Medical SchoolBoston MA U.S.A.
2. Department of Population Medicine Harvard Pilgrim Health Care Institute Boston MA U.S.A.
3. Department of Dermatology Weill Cornell Medical College New York NY U.S.A.
4. Centre for Cell Biology and Cutaneous Research Blizard Institute Barts and the London School of Medicine and Dentistry Queen Mary University of London London U.K.
5. Department of Dermatology University of California San Francisco CA U.S.A.
6. QIMR Berghofer Medical Research Institute Brisbane Qld Australia
7. Cancer Research UK Manchester Institute University of Manchester Manchester U.K.