@misc{indiciae712a1812bd2a,
  title = {A longstanding problem.},
  author = {C D Stephens},
  year = {2006},
  doi = {10.1038/sj.bdj.4813384},
  url = {https://pubmed.ncbi.nlm.nih.gov/16568039/},
  note = {Source identifier: 16568039}
}