[1] Ninewells Hosp & Med Sch, Dermatol Dept, Photobiol Unit, Dundee, Scotland
[2] Kings Coll London, London, England
[3] Queen Elizabeth Univ Hosp, Glasgow City, Scotland
[4] Univ Sussex, Genome Damage & Stabil Ctr, Brighton, England
[5] Guys & St ThomasNHS Fdn Trust, St Johns Inst Dermatol, Natl Xeroderma Pigmentosum Serv, London, England
[6] Univ Dundee, Dundee, Scotland