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Dawn G, Urcelay M, Ah-Weng A, O'Neill SM, Douglas WS.Dawn G, et al. Among authors: ah weng a.Br J Dermatol. 2003 Oct;149(4):836-40. doi: 10.1046/j.1365-2133.2003.05486.x.Br J Dermatol. 2003.PMID: 14616377Clinical Trial.