@misc{indiciae22ea7799c3e3,
  title = {An introductory course for training in endoscopy.},
  author = {Spiros D Ladas and Peter Malfertheiner and Anthony Axon},
  year = {2002},
  doi = {10.1159/000067675},
  url = {https://pubmed.ncbi.nlm.nih.gov/12566607/},
  note = {Source identifier: 12566607}
}