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Starting calcium channel blockers in patients after acute myocardial infarction (AMI). In 1992–1993, 272 (16%) of the 1,683 patients not taking a calcium channel blocker (CCB) at admission were started on one following AMI; in 1995–1996, 139 (6%) of the 2,220 patients not taking a CCB at admission were started on one following AMI.
