@misc{indiciaefc01ee91a02e,
  title = {Serum urea analysis using the Beckman BUN Analyzer.},
  author = {K S Chua and I K Tan},
  year = {1976},
  doi = {10.1136/jcp.29.6.517},
  url = {https://pubmed.ncbi.nlm.nih.gov/820726/},
  note = {Source identifier: 820726}
}