1 Formerly, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region, Hong Kong, China.
2 Department of Rehabilitation Sciences, Hong Kong Special Administrative Region, The Hong Kong Polytechnic University, Hong Kong, China.
3 Department of Rehabilitation Sciences, Hong Kong Special Administrative Region, The Hong Kong Polytechnic University, Hong Kong, China. shamay.ng@polyu.edu.hk.