| http://www.w3.org/ns/prov#value | - FIG. 7 is a graph showing a direct arterial blood pressure signal (the upper channel) as measured in the femoral artery and a cardiac wall displacement signal (the lower channel) derived in accordance with the principles of the present invention, both plotted simultaneously as a function of time, each indicative of a subject that experienced an ectopic heartbeat during normal sinus rhythm.
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