TY  - RPRT
TI  - A clinical trial with an interim analysis.
AU  - P Y Chi
AU  - D R Bristol
AU  - J V Castellana
PY  - 1988
DO  - 10.1002/sim.4780070311
UR  - https://pubmed.ncbi.nlm.nih.gov/3358025/
ID  - 3358025
ER  -