@misc{indiciae992500a69c86,
  title = {More potential for sildenafil than potency.},
  author = {Felix Mahler and Iris Baumgartner},
  year = {2005},
  doi = {10.1161/circulationaha.105.577643},
  url = {https://pubmed.ncbi.nlm.nih.gov/16275879/},
  note = {Source identifier: 16275879}
}