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. 2021 May 4;36(8):1899–1910. doi: 10.1002/mds.28593

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© 2021 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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FIG. 2 — Ages of onset of tics and comorbid psychiatric disorders in persistent motor and vocal tics (PMVT) versus Tourette syndrome (TS). Ages of onset are arranged in chronological order. Left panel, Tourette Association of America International Consortium for Genetics (TAAICG) sample. Right panel, OCD Collaborative Genetics Association Study (OCGAS) sample. ADHD, attention deficit hyperactivity disorder; OCD, obsessive–compulsive disorder. [Color figure can be viewed at wileyonlinelibrary.com]