@misc{indiciae3cd6b9e032c7,
  title = {Performing screening flexible sigmoidoscopy using colonoscopes: experience in 500 subjects.},
  author = {D K Rex and G A Lehman and R H Hawes and K W O'Connor and J J Smith},
  doi = {10.1016/s0016-5107(90)71121-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/2227321/},
  note = {Source identifier: 2227321}
}