TY  - RPRT
TI  - Practical midcourse sample size modification in clinical trials.
AU  - Michael A Proschan
AU  - Qing Liu
AU  - Sally Hunsberger
PY  - 2003
DO  - 10.1016/s0197-2456(02)00240-4
UR  - https://pubmed.ncbi.nlm.nih.gov/12559638/
ID  - 12559638
ER  -