@misc{indiciaea711a0d2fb68,
  title = {Sildenafil.},
  author = {J Cartledge and I Eardley},
  year = {1999},
  doi = {10.1517/14656566.1.1.137},
  url = {https://pubmed.ncbi.nlm.nih.gov/11249556/},
  note = {Source identifier: 11249556}
}