@misc{indiciae8425b2da293c,
  title = {Is it really free?},
  author = {R C Morell and A S Foreman and R L Royster},
  year = {1993},
  doi = {10.1097/00000542-199304000-00038},
  url = {https://pubmed.ncbi.nlm.nih.gov/8466085/},
  note = {Source identifier: 8466085}
}