TY  - RPRT
TI  - Stopping rules for phase II studies.
AU  - N Stallard
AU  - J Whitehead
AU  - S Todd
AU  - A Whitehead
PY  - 2001
DO  - 10.1046/j.0306-5251.2001.01381.x
UR  - https://pubmed.ncbi.nlm.nih.gov/11422011/
ID  - 11422011
ER  -