@misc{indiciae5e0b90c6a9a3,
  title = {Confidence intervals following group sequential tests.},
  author = {M N Chang and P C O'Brien},
  year = {1986},
  doi = {10.1016/0197-2456(86)90004-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/3956209/},
  note = {Source identifier: 3956209}
}