TY  - RPRT
TI  - Aortic valve replacement in elderly patients.
AU  - O Storstein
AU  - L Efskind
PY  - 1979
DO  - 10.1111/j.0954-6820.1979.tb13487.x
UR  - https://pubmed.ncbi.nlm.nih.gov/495221/
ID  - 495221
ER  -