White matter hyperintensity burden predicts cognitive but not motor decline in Parkinson s disease: results from the Ontario Neurodegenerative Diseases Research Initiative - Abreu, Daniela Cristina Carvalho de; Faria, Frederico Pieruccini; Fraser, Julia; Cornish, Benjamin; Tan, Brian; Zamyadi, Mojdeh; Levine, Brian; Orange, Joseph B.; Roberts, Angela C. (European Journal of Neurology, 2023)