@misc{indiciae9deb4d0d2bb2,
  title = {Parathyroid hormone and age.},
  author = {B S Roof and C F Piel and J Hansen and H H Fudenberg},
  year = {1979},
  doi = {10.1056/nejm197910113011514},
  url = {https://pubmed.ncbi.nlm.nih.gov/481523/},
  note = {Source identifier: 481523}
}