@misc{indiciaefe49a5136bb9,
  title = {Controls in journal articles.},
  author = {T C Chalmers and B Schroeder},
  year = {1979},
  doi = {10.1056/nejm197912063012323},
  url = {https://pubmed.ncbi.nlm.nih.gov/503147/},
  note = {Source identifier: 503147}
}