@misc{indiciae84534abceeec,
  title = {Ventilatory function and transfer factor in ankylosing spondylitis.},
  author = {D L Citrin and G Boyd and G W Bradley},
  year = {1973},
  doi = {10.1177/003693307301800404},
  url = {https://pubmed.ncbi.nlm.nih.gov/4719073/},
  note = {Source identifier: 4719073}
}