@article{llewellyn2010-20625021,
  author  = {Llewellyn, D. J. and Lang, I. A. and Langa, K. M. and Muniz-Terrera, G. and Phillips, C. L. and Cherubini, A. and Ferrucci, L. and Melzer, D.},
  title   = {{Vitamin D and risk of cognitive decline in elderly persons}},
  journal = {Archives of internal medicine},
  year    = {2010},
  doi     = {10.1001/archinternmed.2010.173},
  pmid    = {20625021},
  url     = {https://doi.org/10.1001/archinternmed.2010.173}
}