@misc{indiciaee07620de06df,
  title = {Ankylosing spondylitis.},
  author = {J J Calabro and R M Katz and B A Maltz},
  year = {1969},
  doi = {10.1016/s0022-3476(69)80325-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/5347442/},
  note = {Source identifier: 5347442}
}