@misc{indiciaeb2af8bbd3af2,
  title = {Spondylitis psoriatica.},
  author = {N Langeland and A Roaas},
  year = {1971},
  doi = {10.3109/17453677108989060},
  url = {https://pubmed.ncbi.nlm.nih.gov/5143986/},
  note = {Source identifier: 5143986}
}