@misc{indiciae197e57ca0524,
  title = {Interim analyses and sequential designs in phase III studies.},
  author = {S Todd and A Whitehead and N Stallard and J Whitehead},
  year = {2001},
  doi = {10.1046/j.1365-2125.2001.01382.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/11421995/},
  note = {Source identifier: 11421995}
}