@misc{indiciae5f8feae1a646,
  title = {Survival analysis with time-varying relative risks: a tree-based approach.},
  author = {R Xu and S Adak},
  year = {2001},
  url = {https://pubmed.ncbi.nlm.nih.gov/11424300/},
  note = {Source identifier: 11424300}
}