@misc{indiciae282e0195bb26,
  title = {Variations in semen parameters from fathers.},
  author = {T G Cooper and F Jockenhövel and E Nieschlag},
  year = {1991},
  doi = {10.1093/oxfordjournals.humrep.a137441},
  url = {https://pubmed.ncbi.nlm.nih.gov/1757526/},
  note = {Source identifier: 1757526}
}