@misc{indiciaef41759aef994,
  title = {Smiling faces.},
  author = {B Francis},
  year = {1980},
  doi = {10.1097/00152193-198012000-00029},
  url = {https://pubmed.ncbi.nlm.nih.gov/6904865/},
  note = {Source identifier: 6904865}
}