1 Departments of Pharmacology and Psychological Medicine, Memory Aging & Cognition Centre, Yong Loo Lin School of Medicine, National University Singapore, Singapore, Singapore.
2 Department of Medicine & Therapeutics, Faculty of Medicine, Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Research Centre, Lui Che Woo Institute of Innovative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong.