@misc{indiciaea0c98c049aab,
  title = {The quadhelix appliance.},
  author = {D J Birnie and T G McNamara},
  year = {1980},
  doi = {10.1179/bjo.7.3.115},
  url = {https://pubmed.ncbi.nlm.nih.gov/7002208/},
  note = {Source identifier: 7002208}
}