@misc{indiciaea2af5dfa26a4,
  title = {How long does it take to learn endoscopy?},
  author = {L S Friedman},
  year = {1995},
  doi = {10.1016/s0016-5107(95)70143-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/8536913/},
  note = {Source identifier: 8536913}
}