@misc{indiciae90d80a67aa3f,
  title = {Internal intussusception of the rectum: a changing perspective.},
  author = {J W Fleshman and I J Kodner and R D Fry},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2694021/},
  note = {Source identifier: 2694021}
}