@misc{indiciae6ee3398de41c,
  title = {Letter: Cholecystographic modifications to improve initial study opacification.},
  author = {C E Shopfner},
  year = {1975},
  doi = {10.1001/jama.1975.03260180019005},
  url = {https://pubmed.ncbi.nlm.nih.gov/1242160/},
  note = {Source identifier: 1242160}
}