@misc{indiciae92779412eae1,
  title = {Black urine.},
  author = {P Altmann and M A Mansell},
  year = {1980},
  doi = {10.1136/pgmj.56.662.877},
  url = {https://pubmed.ncbi.nlm.nih.gov/7267503/},
  note = {Source identifier: 7267503}
}