@misc{indiciaede01bf602889,
  title = {Improved visualization of choledocholithiasis by sonography.},
  author = {F C Laing and R B Jeffrey and V W Wing},
  year = {1984},
  doi = {10.2214/ajr.143.5.949},
  url = {https://pubmed.ncbi.nlm.nih.gov/6385676/},
  note = {Source identifier: 6385676}
}