@misc{indiciae65c7482789d9,
  title = {Serum prostate-specific antigen concentration before and after vasectomy.},
  author = {P M Lassen and I M Thompson and B Helfrick},
  year = {1996},
  url = {https://pubmed.ncbi.nlm.nih.gov/8700333/},
  note = {Source identifier: 8700333}
}