@misc{indiciae01abe647cbba,
  title = {Challenge and change.},
  author = {K C Sawyer},
  year = {1971},
  doi = {10.1001/archsurg.1971.01350040001001},
  url = {https://pubmed.ncbi.nlm.nih.gov/5553293/},
  note = {Source identifier: 5553293}
}