@misc{indiciae1b764e5c22a9,
  title = {A wonderful smile.},
  author = {R Berg and P Diedrich},
  year = {1998},
  doi = {10.1007/bf01317172},
  url = {https://pubmed.ncbi.nlm.nih.gov/9687210/},
  note = {Source identifier: 9687210}
}