title: Etiology of Tourette's disorder.
authors.forename: H C
authors.initials: HC
authors.lastname: Parraga
authors.forename: H G
authors.initials: HG
authors.lastname: McDonald
mesh_terms: D000293:Adolescent; D002648:Child; D004200:Diseases in Twins / Q000235:genetics / Q000523:psychology; D006801:Humans; D019965:Neurocognitive Disorders / Q000209:etiology / Q000235:genetics / Q000523:psychology; D010641:Phenotype; D012307:Risk Factors; D012931:Social Environment; D005879:Tourette Syndrome / Q000209:etiology* / Q000235:genetics / Q000523:psychology