@misc{indiciae8aceceddd73e,
  title = {Letter: When do gallstones matter?},
  author = {T T Irvin},
  year = {1976},
  doi = {10.1016/s0140-6736(76)91578-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/58232/},
  note = {Source identifier: 58232}
}