TY - RPRT TI - Coronary sinus retroperfusion: can forward progress still be achieved by using a backward technique? AU - Harold L Lazar PY - 2004 DO - 10.1016/j.jtcvs.2004.02.010 UR - https://pubmed.ncbi.nlm.nih.gov/15173705/ ID - 15173705 ER -