TY  - RPRT
TI  - Alternative method to improve exposure for difficult mitral valve procedures.
AU  - A Zacharias
PY  - 1986
DO  - 10.1016/s0003-4975(10)62750-6
UR  - https://pubmed.ncbi.nlm.nih.gov/3753085/
ID  - 3753085
ER  -