TY  - RPRT
TI  - Valvular disease in the elderly.
AU  - D A Hinchman
AU  - C M Otto
PY  - 1999
DO  - 10.1016/s0733-8651(05)70061-8
UR  - https://pubmed.ncbi.nlm.nih.gov/10093770/
ID  - 10093770
ER  -