@misc{indiciae50580390d24a,
  title = {When to stop a clinical trial.},
  author = {S J Pocock},
  year = {1992},
  doi = {10.1136/bmj.305.6847.235},
  url = {https://pubmed.ncbi.nlm.nih.gov/1392832/},
  note = {Source identifier: 1392832}
}