TY  - RPRT
TI  - Progressive decrease of true intestinal calcium absorption with age in normal man.
AU  - C C Alevizaki
AU  - D G Ikkos
AU  - P Singhelakis
PY  - 1973
UR  - https://pubmed.ncbi.nlm.nih.gov/4743584/
ID  - 4743584
ER  -