A standard reference system for spatial vectorcardiography. comparison of the equilateral tetrahedron and the frank systems.
D000328:Adult; D000368:Aged; D001344:Autopsy; D004562:Electrocardiography; D005260:Female; D006331:Heart Diseases / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008433:Mathematics; D014672:Vectorcardiography