@misc{indiciae939a261e0abf,
  title = {Invisible links.},
  author = {K MacInnis},
  year = {1991},
  doi = {10.1097/00000446-199109000-00032},
  url = {https://pubmed.ncbi.nlm.nih.gov/1892159/},
  note = {Source identifier: 1892159}
}