@misc{indiciae09344b71f671,
  title = {Understanding clinical trials.},
  author = {D L Sackett and R J Cook},
  year = {1994},
  doi = {10.1136/bmj.309.6957.755},
  url = {https://pubmed.ncbi.nlm.nih.gov/7950551/},
  note = {Source identifier: 7950551}
}