@misc{indiciaeafd7c47b3699,
  title = {[Errors and hazards of endoscopic procedures].},
  author = {A B Smolenskiĭ and N A Sergeev},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2259108/},
  note = {Source identifier: 2259108}
}