TY  - RPRT
TI  - Valve replacement without preoperative cardiac catheterization.
AU  - B Margolis
AU  - M Kirschbaum
PY  - 1982
DO  - 10.1056/nejm198204083061415
UR  - https://pubmed.ncbi.nlm.nih.gov/7062968/
ID  - 7062968
ER  -