@misc{indiciae824521659319,
  title = {Intestinal absorption of calcium.},
  author = {M R Wills},
  year = {1973},
  doi = {10.1016/s0140-6736(73)90616-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4121237/},
  note = {Source identifier: 4121237}
}