@misc{indiciae65def4eaa3d4,
  title = {Letter: Aetiology of patent ductus arteriosus.},
  author = {H Ochs and A Schaede},
  year = {1975},
  doi = {10.1016/s0140-6736(75)91805-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/47124/},
  note = {Source identifier: 47124}
}