@misc{indiciaeeb11e693f5ff,
  title = {Groningen valve change in difficult cases.},
  author = {A Jain and A J Parker},
  year = {2005},
  doi = {10.1258/0022215054516151},
  url = {https://pubmed.ncbi.nlm.nih.gov/16102219/},
  note = {Source identifier: 16102219}
}