@article{nelson2005-15795053,
  author  = {Nelson, L. and Johnson, J. K. and Freedman, M. and Lott, I. and Groot, J. and Chang, M. and Milgram, N. W. and Head, E.},
  title   = {{Learning and memory as a function of age in Down syndrome: a study using animal-based tasks}},
  journal = {Progress in neuro-psychopharmacology \& biological psychiatry},
  year    = {2005},
  doi     = {10.1016/j.pnpbp.2004.12.009},
  pmid    = {15795053},
  url     = {https://doi.org/10.1016/j.pnpbp.2004.12.009}
}