@misc{indiciae7a727e200e2a,
  title = {What is it?},
  author = {D S Durham and L S Ibels},
  year = {1980},
  doi = {10.1016/s0140-6736(80)90163-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/6105435/},
  note = {Source identifier: 6105435}
}