@misc{indiciaed5d58c83b276,
  title = {Twenty-first anniversary.},
  author = {H Walton},
  year = {1987},
  doi = {10.1111/j.1365-2923.1987.tb00505.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3547049/},
  note = {Source identifier: 3547049}
}