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## Methods  Define which We identified  articles we surveyed. Language exclusions. 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 were chosen based on a purely subjective assessment of interest, guided by judgment of possible future impact.