title: Jumpers.
authors.forename: A
authors.initials: A
authors.lastname: Lees
mesh_terms: D020022:Genetic Predisposition to Disease; D006801:Humans; D013216:Reflex, Startle / Q000235:genetics*; D013981:Tic Disorders / Q000453:epidemiology / Q000235:genetics*; D005879:Tourette Syndrome / Q000235:genetics; D014743:Videotape Recording