@misc{indiciae92ac0cfd1538,
  title = {A colonic double bubble.},
  author = {A Harrison and L Machin and A Grundy},
  year = {1989},
  doi = {10.1259/0007-1285-62-733-85},
  url = {https://pubmed.ncbi.nlm.nih.gov/2914199/},
  note = {Source identifier: 2914199}
}