@misc{indiciae594a85b668bb,
  title = {Electrocardiographic changes during routine sigmoidoscopy.},
  author = {G F Fletcher and D L Earnest and W F Shuford and N K Wenger},
  year = {1968},
  url = {https://pubmed.ncbi.nlm.nih.gov/5721873/},
  note = {Source identifier: 5721873}
}