Affiliation: | 1.Department of Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia ;2.Falls and Syncope Service, Cardiorespiratory Laboratory, University of Malaya Medical Centre, 59100, Kuala Lumpur, Malaysia ;3.Department of Medical Sciences, Faculty of Healthcare and Medical Sciences, Sunway University, Bandar Sunway, Malaysia ; |