@misc{indiciae78b702c1f4ab,
  title = {Interim analyses with delayed observations in clinical trials.},
  author = {S C Choi and Y J Lee},
  year = {1999},
  doi = {10.1002/(sici)1097-0258(19990615)18:11<1297::aid-sim123>3.0.co;2-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/10399197/},
  note = {Source identifier: 10399197}
}