@misc{indiciae461027110189,
  title = {Randomised consent trials.},
  author = {M Zelen},
  year = {1992},
  doi = {10.1016/0140-6736(92)91454-g},
  url = {https://pubmed.ncbi.nlm.nih.gov/1353840/},
  note = {Source identifier: 1353840}
}