@article{mitchell2009-19828530,
  author  = {Mitchell, S. L. and Teno, J. M. and Kiely, D. K. and Shaffer, M. L. and Jones, R. N. and Prigerson, H. G. and Volicer, L. and Givens, J. L. and others},
  title   = {{The clinical course of advanced dementia}},
  journal = {The New England journal of medicine},
  year    = {2009},
  doi     = {10.1056/nejmoa0902234},
  pmid    = {19828530},
  url     = {https://doi.org/10.1056/nejmoa0902234}
}