@misc{indiciaef87c709f7531,
  title = {Increase in unsafe homosexual behaviour.},
  author = {J A van den Hoek and G J van Griensven and R A Coutinho},
  year = {1990},
  doi = {10.1016/0140-6736(90)91700-k},
  url = {https://pubmed.ncbi.nlm.nih.gov/1973494/},
  note = {Source identifier: 1973494}
}