Olfactory dysfunction in parkinsonism

@article{Doty1988OlfactoryDI,
  title={Olfactory dysfunction in parkinsonism},
  author={Richard L. Doty and Daniel A. Deems and Stanley Stellar},
  journal={Neurology},
  year={1988},
  volume={38},
  pages={1237 - 1237}
}
To explore the nature of the olfactory dysfunction associated with Parkinson's disease (PD), 81 PD patients who scored well on a cognitive screening test were administered the 40-odorant University of Pennsylvania Smell Identification Test; 38 were additionally given a forced-choice phenylethyl alcohol odor detection threshold test. Clinical ratings of 11 neurologic symptoms (three bilateral) were obtained at the time of testing, and odor identification was retested in 24 patients at intervals… 

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