TY  - RPRT
TI  - You're never too old.
AU  - J B Wong
AU  - D N Salem
AU  - S G Pauker
PY  - 1993
DO  - 10.1056/nejm199304013281319
UR  - https://pubmed.ncbi.nlm.nih.gov/8446160/
ID  - 8446160
ER  -