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Grattan CE, Humphreys F; British Association of Dermatologists Therapy Guidelines and Audit Subcommittee.Grattan CE, et al. Among authors: humphreys f.Br J Dermatol. 2007 Dec;157(6):1116-23. doi: 10.1111/j.1365-2133.2007.08283.x.Br J Dermatol. 2007.PMID: 18021095