@misc{indiciae261da2603461,
  title = {Hyperkeratosis nigricans.},
  author = {B Sina and C S Samorodin},
  year = {1992},
  doi = {10.1111/j.1365-4362.1992.tb02709.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1500252/},
  note = {Source identifier: 1500252}
}