@misc{indiciae53a305017782,
  title = {Time to cut for the stone.},
  author = {F H Epstein},
  year = {1978},
  doi = {10.1056/nejm197801122980213},
  url = {https://pubmed.ncbi.nlm.nih.gov/201838/},
  note = {Source identifier: 201838}
}