title: [First derivation of electrocardiograms and possibilities of planar vector representation of derived orthogonal ECG].
mesh_terms: D004562:Electrocardiography; D006801:Humans; D014672:Vectorcardiography / Q000379:methods*
vernacular_title: Prvá derivácia elektrokardiogramov a moznosti planárneho vektorového zobrazenia derivovaného ortogonálneho ekg.