@misc{indiciae3ac0230ad5ec,
  title = {Journals with unrestricted copyright.},
  author = {D J Morton},
  year = {1973},
  doi = {10.1097/00001888-197303000-00017},
  url = {https://pubmed.ncbi.nlm.nih.gov/4686649/},
  note = {Source identifier: 4686649}
}