@misc{indiciae25e37556f9db,
  title = {The upside down facemask again.},
  author = {W C Edmondson and A Rushton},
  year = {1992},
  doi = {10.1111/j.1365-2044.1992.tb02199.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1519707/},
  note = {Source identifier: 1519707}
}