tokens: METHODS : We performed a systematic review of published and unpublished data from cohorts with stroke or TIA to compare the presence of MB in : ( 1 ) antithrombotic users vs nonantithrombotic users with ICH ; ( 2 ) antithrombotic users vs nonusers with IS / TIA ; and ( 3 ) ICH vs ischemic events stratified by antithrombotic use .