@misc{indiciae9245e3cae04f,
  title = {A black necrotic ulcer.},
  author = {Stephen D Lawn and Timothy Planche and Peter Riley and Stephen Holwill and Nigel Silman and Kevin Bewley and Philip Rice and Mark H Wansbrough-Jones},
  year = {2003},
  doi = {10.1016/s0140-6736(03)13179-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/12737863/},
  note = {Source identifier: 12737863}
}