@misc{indiciae2a93799d828e,
  title = {Stopping rules for phase II studies.},
  author = {N Stallard and J Whitehead and S Todd and A Whitehead},
  year = {2001},
  doi = {10.1046/j.0306-5251.2001.01381.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/11422011/},
  note = {Source identifier: 11422011}
}