5Petersen P,Boysen G,GodtfredsenJ,et al.PlaCeboOcon2 trolled.randomisedtrialofwarfafin and aspir in for preven 2 fionofihrom boemboliccomp lications i nchronicatrialfi brilla 2 tion.The Copen hagen.AFASAK study.Lancet,1989,8631(1):175.
6HartRG,PearceLA,McBrideR,etal.Factorsas sociated with ischemics troked uringaspir in the rapyina trial fibrilla 2 tion:analysis of 2012 partici pants in the SPAF-clini 2 caltrials.The Stroke Preven tion in Atria l Fibrill ation(SPAF) Inves figators.Stroke,1999,30(6):1223.