@misc{indiciaeb1542f1c0153,
  title = {Designing complex group sequential survival trials.},
  author = {Edward Lakatos},
  year = {2002},
  doi = {10.1002/sim.1193},
  url = {https://pubmed.ncbi.nlm.nih.gov/12111882/},
  note = {Source identifier: 12111882}
}