@misc{indiciae9e8aeb0714d3,
  title = {URSO not so good for PSC.},
  author = {C A Petruff},
  year = {1998},
  doi = {10.1002/ibd.3780040215},
  url = {https://pubmed.ncbi.nlm.nih.gov/9589304/},
  note = {Source identifier: 9589304}
}