@misc{indiciae9a3ed6cb6792,
  title = {Calibration in multi-centre cohort studies.},
  author = {M Plummer and D Clayton and R Kaaks},
  year = {1994},
  doi = {10.1093/ije/23.2.419},
  url = {https://pubmed.ncbi.nlm.nih.gov/8082971/},
  note = {Source identifier: 8082971}
}