@misc{indiciae69aab1ca0775,
  title = {"Snake" flexible arm.},
  author = {I Donald and G D Green and W H Bain},
  year = {1968},
  doi = {10.1136/bmj.4.5624.170},
  url = {https://pubmed.ncbi.nlm.nih.gov/5681058/},
  note = {Source identifier: 5681058}
}