@misc{indiciaebfa4bb0ae5a0,
  title = {Rheumatoid pericarditis.},
  author = {J W LITCHFIELD},
  year = {1963},
  doi = {10.1136/bmj.1.5331.682-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/13930953/},
  note = {Source identifier: 13930953}
}