@misc{indiciaeb641cddf83dc,
  title = {Research procedure.},
  author = {M F Nolan},
  year = {1989},
  doi = {10.1093/ptj/69.7.618},
  url = {https://pubmed.ncbi.nlm.nih.gov/2740451/},
  note = {Source identifier: 2740451}
}