TY  - RPRT
TI  - Predictive accuracy and explained variation in Cox regression.
AU  - M Schemper
AU  - R Henderson
PY  - 2000
DO  - 10.1111/j.0006-341x.2000.00249.x
UR  - https://pubmed.ncbi.nlm.nih.gov/10783803/
ID  - 10783803
ER  -