@misc{indiciaed76a2aced4a5,
  title = {Preparation for endoscopy.},
  author = {G F Nelis},
  year = {1980},
  doi = {10.1016/s0140-6736(80)90208-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/6107531/},
  note = {Source identifier: 6107531}
}