TY  - RPRT
TI  - Mitral valve replacement with ball-valve prostheses.
AU  - K Asano
AU  - M Washio
PY  - 1971
DO  - 10.1007/bf02468911
UR  - https://pubmed.ncbi.nlm.nih.gov/5173076/
ID  - 5173076
ER  -