@misc{indiciae29f09398ef88,
  title = {Oral sildenafil in erectile dysfunction.},
  author = {K M Chan-Tack},
  year = {1998},
  doi = {10.1016/s0140-6736(05)60375-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/9820338/},
  note = {Source identifier: 9820338}
}