TY  - RPRT
TI  - Sample size considerations for studies comparing survival curves using historical controls.
AU  - D O Dixon
AU  - R Simon
PY  - 1988
DO  - 10.1016/0895-4356(88)90025-x
UR  - https://pubmed.ncbi.nlm.nih.gov/3062140/
ID  - 3062140
ER  -