@misc{indiciaedb61f68b9109,
  title = {Hepatitis B: old virus, new problems?},
  author = {J A Barbara},
  year = {1994},
  doi = {10.1111/j.1423-0410.1994.tb04584.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/7975500/},
  note = {Source identifier: 7975500}
}