P4‐213: Progression of Cerebral Small‐Vessel Disease Correlates With Cortical Thinning and Cognitive Impairment in Parkinson's Disease. (1st July 2016) - Foo, Heidi; Mak, Elijah; Yong, Ting Ting; Wen, Ming Ching; Chander, Russell J.; Au, Wing Lok; Tan, Louis; Kandiah, Nagaendran