Fluoxetine has no marked effect on tic symptoms in patients with Tourette'(tm)s syndrome: a double-blind placebo-controlled study. - Scahill,L.; Riddle,MA.; King,RA.; Hardin,MT.; Rasmusson,A.; Makuch,RW.; Leckman,JF. (J Child Adolesc Psychopharmacol, 1997)