TY  - RPRT
TI  - Using the bootstrap for estimation in group sequential designs: an application to a clinical trial for nasopharyngeal cancer.
AU  - M LeBlanc
AU  - J Crowley
PY  - 1999
DO  - 10.1002/(sici)1097-0258(19991015)18:19<2635::aid-sim200>3.0.co;2-7
UR  - https://pubmed.ncbi.nlm.nih.gov/10495461/
ID  - 10495461
ER  -