TY  - RPRT
TI  - Computing the Cox model for case cohort designs.
AU  - T M Therneau
AU  - H Li
PY  - 1999
DO  - 10.1023/a:1009691327335
UR  - https://pubmed.ncbi.nlm.nih.gov/10408179/
ID  - 10408179
ER  -