TY  - RPRT
TI  - Exercise tests before and after heart valve replacement.
AU  - D G Gilmour
AU  - S G Spiro
AU  - M J Raphael
AU  - S Freedman
PY  - 1976
DO  - 10.1016/0007-0971(76)90028-0
UR  - https://pubmed.ncbi.nlm.nih.gov/990160/
ID  - 990160
ER  -