@misc{indiciaeed22fcc0706b,
  title = {Identifiability assumptions for missing covariate data in failure time regression models.},
  author = {Paul J Rathouz},
  year = {2006},
  doi = {10.1093/biostatistics/kxl014},
  url = {https://pubmed.ncbi.nlm.nih.gov/16840561/},
  note = {Source identifier: 16840561}
}