Assertion: infective endocarditis | /r/CapableOf | represent 46% of all cases
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text: For example, the incidence rate of infective endocarditis was found to be approximately 12 per 100,000 person-years the Philadelphia region, the excess incidence attributed almost entirely to the increased frequency of intravenous drug use in this region, where infective endocarditis in intravenous drug users represented 46% of all cases (10).