Polymorphisms in the PTPN22 region are associated with psoriasis of early onset.
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Br J Dermatol. 2008 May;158(5):962-8. doi: 10.1111/j.1365-2133.2008.08482.x. Epub 2008 Mar 13.
Br J Dermatol. 2008.
PMID: 18341666
Free PMC article.