@misc{indiciaed5226593cb84,
  title = {Haemoglobin estimation: a comparison of different techniques.},
  author = {P C Elwood and A Jacobs},
  year = {1966},
  doi = {10.1136/bmj.1.5478.20},
  url = {https://pubmed.ncbi.nlm.nih.gov/5900899/},
  note = {Source identifier: 5900899}
}