TY - RPRT TI - Programmed left ventricular contrast injection. A method to minimize left ventricular irritability during angiography. AU - J H Caldwell AU - J W Kennedy PY - 1977 DO - 10.1016/s0002-8703(77)80305-0 UR - https://pubmed.ncbi.nlm.nih.gov/835460/ ID - 835460 ER -