P3‐307: NEUROPSYCHIATRIC SYMPTOMS AS PREDICTORS OF PROGRESSION IN MILD COGNITIVE IMPAIRMENT (MCI) AND MILD ALZHEIMER'S DISEASE (AD): THE ROLE OF APATHY. (1st July 2019) - Low, Kristabella; Ali, Noorhazlina; Chan, Mark; Tay, Laura; Lim, Wee Shiong; Chew, Justin