@misc{indiciae13295db02e58,
  title = {A partially grouped logrank test.},
  author = {R Sposto and D Stablein and S Carter-Campbell},
  year = {1997},
  doi = {10.1002/(sici)1097-0258(19970330)16:6<695::aid-sim436>3.0.co;2-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/9131757/},
  note = {Source identifier: 9131757}
}