@misc{indiciae74909d94f08f,
  title = {A "fixed" filling defect in the gallbladder.},
  author = {W C Lang and B R Baumgartner},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4812480/},
  note = {Source identifier: 4812480}
}