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Brentjens MH, Yeung-Yue KA, Lee PC, Tyring SK.Brentjens MH, et al. Among authors: tyring sk.Pharmacoeconomics. 2003;21(12):853-63. doi: 10.2165/00019053-200321120-00002.Pharmacoeconomics. 2003.PMID: 12908841Review.
Severson J, Evans TY, Lee P, Chan T, Arany I, Tyring SK.Severson J, et al. Among authors: tyring sk.J Cutan Med Surg. 2001 Jan-Feb;5(1):43-60. doi: 10.1177/120347540100500110.J Cutan Med Surg. 2001.PMID: 11281434Review.
Rivera A, Tyring SK.Rivera A, et al. Among authors: tyring sk.Dermatol Ther. 2004;17(6):441-8. doi: 10.1111/j.1396-0296.2004.04047.x.Dermatol Ther. 2004.PMID: 15571494Review.