TY  - RPRT
TI  - A simulated sequential analysis based on data from two MRC trials.
AU  - A N Donaldson
AU  - J Whitehead
AU  - R Stephens
AU  - D Machin
PY  - 1993
DO  - 10.1038/bjc.1993.499
UR  - https://pubmed.ncbi.nlm.nih.gov/8260369/
ID  - 8260369
ER  -