@misc{indiciaedbf09fea758c,
  title = {How to do a simple epidemiological study. II. Practice.},
  author = {T J Bowker},
  year = {1996},
  doi = {10.1016/s0167-5273(96)02801-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/9024906/},
  note = {Source identifier: 9024906}
}