@misc{indiciaecb071b4b29d7,
  title = {Comparative circulatory serum levels.},
  year = {1980},
  doi = {10.1038/sj.bdj.4804471},
  url = {https://pubmed.ncbi.nlm.nih.gov/6932888/},
  note = {Source identifier: 6932888}
}