TY  - RPRT
TI  - Technical problems in mitral valve repair and replacement.
AU  - D A Cooley
PY  - 1989
DO  - 10.1016/0003-4975(89)90655-3
UR  - https://pubmed.ncbi.nlm.nih.gov/2673112/
ID  - 2673112
ER  -