@misc{indiciae50838fbebba2,
  title = {Progressive decrease of true intestinal calcium absorption with age in normal man.},
  author = {C C Alevizaki and D G Ikkos and P Singhelakis},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4743584/},
  note = {Source identifier: 4743584}
}