@misc{indiciae18b8b4d92120,
  title = {Ankylosing spondylitis and exercise.},
  author = {A J Richards},
  year = {1989},
  doi = {10.1093/rheumatology/28.4.365-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/2743103/},
  note = {Source identifier: 2743103}
}