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## #  Methods We searched PubMed on [date] using the search strategy “("Tic Disorders"[MeSH] OR Tourette NOT Tourette[AU]) AND 2015[PDAT] NOT 2016[PDAT]”. 2015[PDAT]”, adding “NOT 2016[PDAT]” for searches done in 2016.  We also reviewed F1000Prime recommendations and noted presentations of interest at medical conferences. However, articles were chosen based on a purely subjective assessment of interest, guided by our judgment of their possible future impact on the field.