@misc{indiciae5b602e7dd51e,
  title = {Non-attendance or non-invitation?},
  author = {I A Davidson},
  year = {1989},
  doi = {10.1136/bmj.299.6690.53-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/2503213/},
  note = {Source identifier: 2503213}
}