@misc{indiciaefd1535035966,
  title = {Nonparametric estimation of relative mortality from nested case-control studies.},
  author = {O Borgan and B Langholz},
  year = {1993},
  url = {https://pubmed.ncbi.nlm.nih.gov/8369390/},
  note = {Source identifier: 8369390}
}