TY  - RPRT
TI  - When is a prognostic factor useful? A guide for the perplexed.
AU  - M N Levine
AU  - G P Browman
AU  - M Gent
AU  - R Roberts
AU  - M Goodyear
PY  - 1991
DO  - 10.1200/jco.1991.9.2.348
UR  - https://pubmed.ncbi.nlm.nih.gov/1988581/
ID  - 1988581
ER  -