@misc{indiciaefa8b54538510,
  title = {Preventive clinical trials. An overview.},
  author = {P Greenwald},
  year = {1995},
  doi = {10.1111/j.1749-6632.1995.tb12116.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/8526342/},
  note = {Source identifier: 8526342}
}