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Strober BE, Siu K, Alexis AF, Kim G, Washenik K, Sinha A, Shupack JL.Strober BE, et al.J Am Acad Dermatol. 2005 Jun;52(6):1082-4. doi: 10.1016/j.jaad.2005.03.039.J Am Acad Dermatol. 2005.PMID: 15928633Clinical Trial.