@misc{indiciae4565b2a47812,
  title = {Technical aid for facilitating emergency endoscopy.},
  author = {J Sontheimer and R Salm and M Cegla and D Reichenbacher},
  year = {1989},
  doi = {10.1055/s-2007-1012970},
  url = {https://pubmed.ncbi.nlm.nih.gov/2612431/},
  note = {Source identifier: 2612431}
}