Fredrick A. Matsen

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BACKGROUND Epicardial catheter ablation via subxiphoid percutaneous access currently is used upon failure of endocardial catheter ablation. The safety, efficacy, and applicability of epicardial catheter ablation likely will improve with direct visualization of the pericardial space. OBJECTIVE The purpose of this study was to assess the feasibility of(More)
The Internet provides a readily accessible educational resource for individuals outside the context of defined curricula. These “learners-at-large” often use search engines to locate educational materials that meet their needs. It is necessary for creators of educational content on the Web to understand the factors affecting the ability of search(More)
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