%0 Journal Article %T Optimizing olfactory testing for the diagnosis of Parkinson¡¯s disease: item analysis of the university of Pennsylvania smell identification test %A Abigail Cohen %A Andrew J. Lees %A Christopher Hawkes %A Daniel Weintraub %A David R. Williams %A James F. Morley %A John E. Duda %A Julie P. Shtraks %A Laura Silveira-Moriyama %A Regina Katzenschlager %A Richard L. Doty %J Archive of "NPJ Parkinson's Disease". %D 2018 %R 10.1038/s41531-017-0039-8 %X Examples of currently available olfactory tests used in PD and previously proposed discriminant subsets of odor %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768805/