@misc{indiciae39ecafab76a3,
  title = {Relative risk, risk difference and rate difference models for sparse stratified data: a pseudo likelihood approach.},
  author = {T Stijnen and H C Van Houwelingen},
  year = {1993},
  doi = {10.1002/sim.4780122406},
  url = {https://pubmed.ncbi.nlm.nih.gov/8134733/},
  note = {Source identifier: 8134733}
}