Regional brain amyloid-β accumulation associates with domain-specific cognitive performance in Parkinson disease without dementia

Rizwan S. Akhtar, Sharon X. Xie, Yin J. Chen, Jacqueline Rick, Rachel G. Gross, Ilya M. Nasrallah, Vivianna M. Van Deerlin, John Q. Trojanowski, Alice S. Chen-Plotkin, Howard I. Hurtig, Andrew D. Siderowf, Jacob G. Dubroff, Daniel Weintraub