@misc{indiciaeae833a669048,
  title = {Front-line epidemiology.},
  author = {B Criel and B Dujardin},
  year = {1992},
  doi = {10.1093/tropej/38.3.137},
  url = {https://pubmed.ncbi.nlm.nih.gov/1507310/},
  note = {Source identifier: 1507310}
}