Acute intravenous administration of ondansetron and m-CPP, alone and in combination, in patients with obsessive-compulsive disorder (OCD): behavioral and biological results. - Brooks,A.; Pigott,T.A.; Hill,J.L.; Canter,S.; Grady,T.A.; L'Heureux,F.; Murphy,D.L. (Psychiat. Res., 1998)