@misc{indiciaeed911ed3b4b5,
  title = {Age at first intercourse.},
  author = {H Wielandt and J Boldsen},
  year = {1989},
  doi = {10.1017/s0021932000017867},
  url = {https://pubmed.ncbi.nlm.nih.gov/2722913/},
  note = {Source identifier: 2722913}
}