1. Division of Neurology; Department of Medicine and Therapeutics; Faculty of Medicine; The Chinese University of Hong Kong; Shatin NT Hong Kong
2. Therese Pei Fong Chow Research Centre for Prevention of Dementia and Gerald Choa Neuroscience Centre; Faculty of Medicine; The Chinese University of Hong Kong; Shatin NT Hong Kong
3. Clinical Trials and Biostatistics Lab; CUHK Shenzhen Research Institute; Shenzhen China
4. Division of Biostatistics; Jockey Club School of Public Health and Primary Care; Faculty of Medicine; The Chinese University of Hong Kong; New Territories Hong Kong
5. Department of Neurology; First Affiliated Hospital of Sun Yat-Sen University; Guangzhou Guangdong China
6. Key Laboratory for Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department; National Key Discipline; Guangzhou 510080 China