@misc{indiciae20d5c58bd620,
  title = {[Human biological age].},
  author = {W Ries and D Pöthig and I Hunecke and I Sauer},
  year = {1981},
  url = {https://pubmed.ncbi.nlm.nih.gov/7347935/},
  note = {Source identifier: 7347935}
}