@misc{indiciae7057819fa02e,
  title = {Birdsong},
  author = {P Slade},
  year = {1999},
  doi = {10.1136/bmj.319.7224.1583a},
  url = {https://pubmed.ncbi.nlm.nih.gov/10591744/},
  note = {Source identifier: 10591744}
}