@misc{indiciae08ee2615b15c,
  title = {Serum ionic calcium measurement.},
  author = {P Altman},
  year = {1977},
  doi = {10.1093/ajcp/67.5.505},
  url = {https://pubmed.ncbi.nlm.nih.gov/855831/},
  note = {Source identifier: 855831}
}