TY  - RPRT
TI  - [Valve diseases in the aged: when to operate?].
AU  - J Azpitarte
PY  - 1998
DO  - 10.1016/s0300-8932(98)74704-9
UR  - https://pubmed.ncbi.nlm.nih.gov/9522607/
ID  - 9522607
ER  -