@article{beeldman2016-26283685,
  author  = {Beeldman, E. and Raaphorst, J. and Klein Twennaar, M. and de Visser, M. and Schmand, B. A. and de Haan, R. J.},
  title   = {{The cognitive profile of ALS: a systematic review and meta-analysis update}},
  journal = {Journal of neurology, neurosurgery, and psychiatry},
  year    = {2016},
  doi     = {10.1136/jnnp-2015-310734},
  pmid    = {26283685},
  url     = {https://doi.org/10.1136/jnnp-2015-310734}
}