@misc{indiciae00870d3d4ef1,
  title = {Research in developing countries.},
  author = {K Warren},
  year = {1992},
  doi = {10.1016/0140-6736(92)90125-m},
  url = {https://pubmed.ncbi.nlm.nih.gov/1346698/},
  note = {Source identifier: 1346698}
}