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## Methods  Weidentified articles by PubMed searches and F1000OPrime recommendations. We  searched PubMed on [date] using the search strategy “("Tic Disorders"[MeSH] OR Tourette NOT Tourette[AU]) AND 2015[PDAT] NOT 2016[PDAT]”. Articles 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. impact on the field.