@misc{indiciae969a932bbdb9,
  title = {Normal human serum fluoride concentrations.},
  author = {L Singer and W D Armstrong},
  year = {1967},
  doi = {10.1038/2141161b0},
  url = {https://pubmed.ncbi.nlm.nih.gov/6053092/},
  note = {Source identifier: 6053092}
}