@misc{indiciae075632f67f6f,
  title = {Viagra--after one year.},
  author = {W D Steers},
  year = {1999},
  doi = {10.1016/s0090-4295(99)00133-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/10414719/},
  note = {Source identifier: 10414719}
}