TY  - RPRT
TI  - Power calculation for the log rank test using historical data.
AU  - A B Cantor
PY  - 1996
DO  - 10.1016/s0197-2456(96)80002-x
UR  - https://pubmed.ncbi.nlm.nih.gov/8860063/
ID  - 8860063
ER  -