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Groves RW, Ross EL, Barker JN, MacDonald DM.Groves RW, et al. Among authors: macdonald dm.J Am Acad Dermatol. 1993 Jul;29(1):67-72. doi: 10.1016/0190-9622(93)70154-l.J Am Acad Dermatol. 1993.PMID: 7686190
McGregor JM, Barker JN, Ross EL, MacDonald DM.McGregor JM, et al. Among authors: macdonald dm.J Am Acad Dermatol. 1992 Sep;27(3):383-8. doi: 10.1016/0190-9622(92)70203-r.J Am Acad Dermatol. 1992.PMID: 1401271