@misc{indiciaef908514c2bf8,
  title = {Analysing the association between two variables.},
  author = {J S Bulman and J F Osborn},
  year = {1989},
  doi = {10.1038/sj.bdj.4806811},
  url = {https://pubmed.ncbi.nlm.nih.gov/2719890/},
  note = {Source identifier: 2719890}
}