00390nas a2200145 4500000000100000000000100001008004100002100001900043700001400062700001600076245011900092300001200211490000700223022001400230 2014 d1 aA. Siriwardena1 aZ. Asghar1 aC. Coupland00aInfluenza and pneumococcal vaccination and risk of stroke or transient ischaemic attack-matched case control study a1354-610 v32 a0264-410x