[1] Univ Dundee, Ninewells Hosp & Med Sch, Photobiol Unit, Dundee DD1 9SY, Scotland
[2] So Gen Hosp, Dept Dermatol, Glasgow G51 4TF, Lanark, Scotland
[3] Cumberland Infirm, Dept Dermatol, Carlisle CA2 7HY, England
[4] Newcastle Gen Hosp, Dept Reg Med Phys, Newcastle Upon Tyne NE4 6BE, Tyne & Wear, England
[5] Royal Gwent Hosp, Dept Dermatol, Newport NP9 2UB, Gwent, Wales
[6] Royal Victoria Infirm, Dept Dermatol, Newcastle Upon Tyne NE1 4LP, Tyne & Wear, England
[7] Royal Victoria Infirm, Dept Reg Med Phys, Newcastle Upon Tyne NE1 4LP, Tyne & Wear, England
[8] Bradford Royal Infirm, Dept Phys Med, Bradford BD9 6RJ, W Yorkshire, England
[9] St Thomas Hosp, Dept Environm Dermatol, London SE1 7EH, England
[10] Gartnavel Royal Hosp, Dept Hlth Phys, Glasgow G12 0XH, Lanark, Scotland
[11] Belfast City Hosp, Dept Dermatol, Belfast BT16 1RH, Antrim, North Ireland
[12] Hope Hosp, Dermatol Ctr, Photobiol Unit, Salford M6 8HD, Lancs, England
[13] Gloucestershire Royal Hosp, Dept Phys Med, Gloucester GL1 3NN, England