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Shah M, Targoff IN, Rice MM, Miller FW, Rider LG; Childhood Myositis Heterogeneity Collaborative Study Group.Shah M, et al.Arthritis Rheum. 2013 Jul;65(7):1934-41. doi: 10.1002/art.37985.Arthritis Rheum. 2013.PMID: 23658122Free PMC article.