@misc{indiciae6f7ac12be4e6,
  title = {Pericarditis: differential diagnostic considerations.},
  author = {R C Agner and H A Gallis},
  year = {1979},
  doi = {10.1001/archinte.139.4.407},
  url = {https://pubmed.ncbi.nlm.nih.gov/434993/},
  note = {Source identifier: 434993}
}