@misc{indiciaec46bf67007cd,
  title = {Clinical research in general practice.},
  author = {A M Porter},
  year = {1971},
  doi = {10.1136/bmj.1.5749.600},
  url = {https://pubmed.ncbi.nlm.nih.gov/4926792/},
  note = {Source identifier: 4926792}
}