@misc{indiciaef19200364916,
  title = {Frusemide and calcium excretion.},
  author = {M S Knapp and D A Heath},
  year = {1969},
  doi = {10.1136/bmj.2.5651.248-d},
  url = {https://pubmed.ncbi.nlm.nih.gov/5780443/},
  note = {Source identifier: 5780443}
}