Is core laboratory essential for using echocardiography in clinical trials? Controlled vs random error.
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D002986:Clinical Trials as Topic; D004452:Echocardiography / Q000592:standards*; D006801:Humans; D009203:Myocardial Infarction / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D011785:Quality Assurance, Health Care; D011786:Quality Control; D015203:Reproducibility of Results; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D020257:Ventricular Remodeling / Q000502:physiology*