A comparison of the relative value of noninvasive techniques--echocardiography, systolic time intervals, and apexcardiography--in the diagnosis of primary myocardial disease
- PMID: 4411606
- DOI: 10.1016/0002-8703(74)90205-1
A comparison of the relative value of noninvasive techniques--echocardiography, systolic time intervals, and apexcardiography--in the diagnosis of primary myocardial disease
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