TY - RPRT TI - Pulsus alternans: physiologic study by noninvasive techniques. AU - D H Spodick AU - J R St Pierre PY - 1970 DO - 10.1016/0002-8703(70)90138-9 UR - https://pubmed.ncbi.nlm.nih.gov/5477622/ ID - 5477622 ER -