@misc{indiciae2723eef41937,
  title = {Hepatitis B testing: a source of technical error.},
  author = {A Barr and S R Houston and I P Macvarish and B C Dow and R Mitchell and R J Crawford},
  year = {1981},
  url = {https://pubmed.ncbi.nlm.nih.gov/7334923/},
  note = {Source identifier: 7334923}
}