@misc{indiciaedee011b3f6b5,
  title = {Contagious yawning in chimpanzees.},
  author = {James R Anderson and Masako Myowa-Yamakoshi and Tetsuro Matsuzawa},
  year = {2004},
  doi = {10.1098/rsbl.2004.0224},
  url = {https://pubmed.ncbi.nlm.nih.gov/15801606/},
  note = {Source identifier: 15801606}
}