@misc{indiciae1375c1bfde9e,
  title = {Further studies on Leydig cell function in old age.},
  author = {R Rubens and M Dhont and A Vermeulen},
  year = {1974},
  doi = {10.1210/jcem-39-1-40},
  url = {https://pubmed.ncbi.nlm.nih.gov/4600506/},
  note = {Source identifier: 4600506}
}