@misc{indiciae15127a22e903,
  title = {The crystal ball.},
  author = {L D Vandam},
  year = {1970},
  doi = {10.1056/nejm197009242831311},
  url = {https://pubmed.ncbi.nlm.nih.gov/5454757/},
  note = {Source identifier: 5454757}
}