TY - RPRT TI - Further observations with the normalized electrocardiogram and axis map. AU - J A ABILDSKOV AU - R McFEE AU - G L SCHECTER PY - 1963 DO - 10.1016/0002-8703(63)90154-6 UR - https://pubmed.ncbi.nlm.nih.gov/14010682/ ID - 14010682 ER -