@misc{indiciae79ce00586673,
  title = {Immunoselected hepatitis B virus mutant.},
  author = {K Moriyama and E Nakajima and H Hohjoh and R Asayama and K Okochi},
  year = {1991},
  doi = {10.1016/0140-6736(91)90793-o},
  url = {https://pubmed.ncbi.nlm.nih.gov/1670720/},
  note = {Source identifier: 1670720}
}