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# Methods  We searched PubMed from time to time during 2016 using the search strategy “("Tic Disorders"[MeSH] OR Tourette NOT Tourette[AU]) AND 2016[PDAT] NOT 1950:2015[PDAT]”. (On 26 Jan 03 Jun  2016 this search returned 9 66  citations.) Colleagues also recommended articles, and we attended selected medical conferences. We selected material for this review subjectively, guided by our judgment of possible future impact on the field.