@misc{indiciae2303c73ea903,
  title = {Urinary calcium determination. Three newer methods compared with the Clark-Collip procedure.},
  author = {J S King and R Buchanan},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/4973909/},
  note = {Source identifier: 4973909}
}