TY - RPRT TI - Standardizing factors in electrocardiography. AU - J A CRONVICH AU - J P CONWAY AU - G E BURCH PY - 1950 DO - 10.1161/01.cir.2.1.111 UR - https://pubmed.ncbi.nlm.nih.gov/15427199/ ID - 15427199 ER -