@misc{indiciaef3f6ad147a63,
  title = {Ankylosing spondylitis.},
  author = {M E Knapp},
  year = {1968},
  doi = {10.1080/00325481.1968.11693158},
  url = {https://pubmed.ncbi.nlm.nih.gov/5638770/},
  note = {Source identifier: 5638770}
}