@misc{indiciae286c48eed16d,
  title = {What do we mean by validating a prognostic model?},
  author = {D G Altman and P Royston},
  year = {2000},
  doi = {10.1002/(sici)1097-0258(20000229)19:4<453::aid-sim350>3.0.co;2-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/10694730/},
  note = {Source identifier: 10694730}
}