4World Health Organization. The ICD-IO classification of mental and behaviouraldisorders:clinical descriptions and diagnostic guidelines.
5Leckman JF, Riddle MA, Hardin MT, et al. The Yale Global Tic Severity Scale: initial testing of a clinician- rated scale of tic severity [J].J Am Acad Child Adolesc Psychiatry, 1989,28(4) : 566-573.
6Prevalence of diagnosed Tourette syndrome in persons aged 6-17 years United States,2007 [J].MMWR Morb Mortal Wkly Rep, 2009,58(21) : 581-585.
