@misc{indiciae8528d9586c2a,
  title = {Comparison between communities.},
  author = {A R Walker and A Duvenhage and I Segal},
  year = {1979},
  doi = {10.1136/bmj.1.6157.196-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/421017/},
  note = {Source identifier: 421017}
}