@misc{indiciae21c2875eb4aa,
  title = {Research methods for obtaining primary evidence.},
  author = {R Jaeschke and D L Sackett},
  year = {1989},
  doi = {10.1017/s0266462300008436},
  url = {https://pubmed.ncbi.nlm.nih.gov/2699468/},
  note = {Source identifier: 2699468}
}