@misc{indiciae7a5e45104331,
  title = {Changing practice: by choice rather than chance.},
  author = {S F Pierce and D Thompson},
  year = {1976},
  doi = {10.1097/00005110-197602000-00011},
  url = {https://pubmed.ncbi.nlm.nih.gov/812965/},
  note = {Source identifier: 812965}
}