@misc{indiciaeed9f3bbe6c9a, title = {Alternative method to improve exposure for difficult mitral valve procedures.}, author = {A Zacharias}, year = {1986}, doi = {10.1016/s0003-4975(10)62750-6}, url = {https://pubmed.ncbi.nlm.nih.gov/3753085/}, note = {Source identifier: 3753085} }