@misc{indiciae8c3a9d382e9e,
  title = {Letter: Insomnia.},
  author = {B L Frankel},
  year = {1974},
  doi = {10.1056/nejm197405162902015},
  url = {https://pubmed.ncbi.nlm.nih.gov/4821178/},
  note = {Source identifier: 4821178}
}