<style face="normal" font="default" size="100%">Traditional versus marginal structural models to estimate the effectiveness of beta-blocker use on mortality after myocardial infarction</style>

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31<style face="normal" font="default" size="100%">Traditional versus marginal structural models to estimate the effectiveness of beta-blocker use on mortality after myocardial infarction</style><style face="normal" font="default" size="100%">Traditional versus marginal structural models to estimate the effectiveness of beta-blocker use on mortality after myocardial infarction</style>