TY - RPRT TI - A simple method to facilitate difficult intraaortic balloon insertions. AU - D Bregman AU - H Bolooki AU - J R Malm PY - 1973 DO - 10.1016/s0003-4975(10)65359-3 UR - https://pubmed.ncbi.nlm.nih.gov/4708291/ ID - 4708291 ER -