@article{fullard2016-26923521,
  author  = {Fullard, M. E. and Tran, B. and Xie, S. X. and Toledo, J. B. and Scordia, C. and Linder, C. and Purri, R. and Weintraub, D. and others},
  title   = {{Olfactory impairment predicts cognitive decline in early Parkinson's disease}},
  journal = {Parkinsonism \& related disorders},
  year    = {2016},
  doi     = {10.1016/j.parkreldis.2016.02.013},
  pmid    = {26923521},
  url     = {https://doi.org/10.1016/j.parkreldis.2016.02.013}
}