@misc{indiciae4286eaa15f7f,
  title = {Hepatitis B surface antigen in pleural fluid.},
  author = {S De Flora and F Forci},
  year = {1977},
  doi = {10.1016/s0140-6736(77)92488-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/68377/},
  note = {Source identifier: 68377}
}