TY  - RPRT
TI  - Monitoring operative risk in the elderly.
AU  - L R Del Guercio
AU  - J D Cohn
PY  - 1980
DO  - 10.1001/jama.243.13.1350
UR  - https://pubmed.ncbi.nlm.nih.gov/7359697/
ID  - 7359697
ER  -