@misc{indiciaea3d52e11607f,
  title = {PFO closure, when the going gets tough ...},
  author = {Bernhard Meier},
  year = {2005},
  doi = {10.1002/ccd.20296},
  url = {https://pubmed.ncbi.nlm.nih.gov/15736253/},
  note = {Source identifier: 15736253}
}