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Tuthill JI, Khamashta MA.Tuthill JI, et al. Among authors: khamashta ma.J Autoimmun. 2009 Sep;33(2):92-8. doi: 10.1016/j.jaut.2009.05.002. Epub 2009 Jun 25.J Autoimmun. 2009.PMID: 19559568Review.