@misc{indiciae436b94da5e38,
  title = {G F Gibberd.},
  author = {G F Gibberd},
  year = {1976},
  doi = {10.1136/bmj.2.6039.821},
  url = {https://pubmed.ncbi.nlm.nih.gov/788852/},
  note = {Source identifier: 788852}
}