National use and effectiveness of beta-blockers for the treatment of elderly patients after acute myocardial infarction: National Cooperative Cardiovascular Project |
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Authors: | HM Krumholz MJ Radford Y Wang J Chen A Heiat TA Marciniak |
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Affiliation: | Department of Medicine, Yale School of Medicine, and the Yale-New Haven Hospital Center for Outcomes Research and Evaluation, CT 06520-8025, USA. harlan.krumholz@yale.edu |
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