TY  - RPRT
TI  - Evaluating differences in survival between two groups of patients.
AU  - B F Hankey
AU  - M H Myers
PY  - 1971
DO  - 10.1016/0021-9681(71)90041-5
UR  - https://pubmed.ncbi.nlm.nih.gov/5158765/
ID  - 5158765
ER  -