@misc{indiciae7ede6da84c58,
  title = {Ankylosing spondylitis.},
  author = {F D Hart},
  year = {1968},
  doi = {10.1016/s0140-6736(68)91832-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4177403/},
  note = {Source identifier: 4177403}
}