@misc{indiciae6eb6d7ae2649,
  title = {Epidemiological research methods. Part I. Why epidemiology?},
  author = {D Yach and J L Botha},
  year = {1986},
  url = {https://pubmed.ncbi.nlm.nih.gov/3529451/},
  note = {Source identifier: 3529451}
}