@misc{indiciaecf5acca1beda,
  title = {A new binocular attachment for teaching sigmoidoscopy.},
  author = {S D MANHEIM and R M ALEXANDER},
  year = {1953},
  doi = {10.1016/0002-9610(54)90562-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/13114575/},
  note = {Source identifier: 13114575}
}