@misc{indiciaeae35ab68aaef,
  title = {Cholinergic link in yawning.},
  author = {A Cowan},
  year = {1978},
  doi = {10.1038/271187b0},
  url = {https://pubmed.ncbi.nlm.nih.gov/414140/},
  note = {Source identifier: 414140}
}