@misc{indiciaeaa8a97f1337e,
  title = {Teaching tip: balloons and teddy bears.},
  author = {Gervase Vernon},
  year = {2006},
  doi = {10.1136/ebm.11.2.39},
  url = {https://pubmed.ncbi.nlm.nih.gov/17213071/},
  note = {Source identifier: 17213071}
}