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Crowley JJ, Nikko A, Varghese A, Hoppe RT, Kim YH.Crowley JJ, et al.J Am Acad Dermatol. 1998 May;38(5 Pt 1):696-701. doi: 10.1016/s0190-9622(98)70198-7.J Am Acad Dermatol. 1998.PMID: 9591813Free article.