Atypical antipsychotic drugs and risk of ischaemic stroke: population based retrospective cohort study. - Gill,S.S.; Rochon,P.A.; Herrmann,N.; Lee,P.E.; Sykora,K.; Nadia,G.; Sharon-Lise,T.N.; Gurwitz,J.H.; Marras,C.; Wodchis,W.; Mamdani,M. (BMJ, 2005)