@misc{indiciae16309dc55049,
  title = {Aids to insertion: magnetic imaging, variable stiffness, and overtubes.},
  author = {Syed G Shah and Brian P Saunders},
  year = {2005},
  doi = {10.1016/j.giec.2005.08.011},
  url = {https://pubmed.ncbi.nlm.nih.gov/16278132/},
  note = {Source identifier: 16278132}
}