@misc{indiciae23fd71abe5cc,
  title = {Addendum on serum levels.},
  author = {K J Begg},
  year = {1967},
  doi = {10.1016/s0041-3879(67)80010-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/6048657/},
  note = {Source identifier: 6048657}
}