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Comparative recording of the heart beat by ultralow frequency and direct body methods with evidence of their basic
Bibliotheca Cardiologica
|January 1, 1979
Abstract:
An attempt has been made to validate the d-v-a modification of the direct body electromagnetic shin bar in the ballistocardiographic evaluation of cardiac function. Its essential mirror reflections of body movements recorded with Ulf have been amply illustrated. A plea is made for a resumption of interest in its wider clinical application within a rigid correlative framework.