Assessment of left ventricular ejection fraction using an ultrasonic stethoscope in critically ill patients | BMC - I like this message, EF in portable ultrasound is not a point, but a matter of experience https://t.co/hIq1TmvvjO #
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RT @avkwong: Assessment of left ventricular ejection fraction using an US stethoscope in critically ill patients https://t.co/lUpTDiN8fL #L…