@misc{indiciaee7966b25c3f1,
  title = {Controlled trials and escape clauses.},
  author = {D H Spodick},
  year = {1982},
  doi = {10.1378/chest.81.1.131-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/7053935/},
  note = {Source identifier: 7053935}
}