@misc{indiciae93020b2604e1,
  title = {The double pylorus.},
  author = {O H Hansen and O Kronborg and T Pedersen},
  year = {1972},
  doi = {10.3109/00365527209180979},
  url = {https://pubmed.ncbi.nlm.nih.gov/4640644/},
  note = {Source identifier: 4640644}
}