1. Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, China. (P.C., P.W.H.K., R.C.K.C., S.S.M.N.)
2. School of Nursing & Health Studies, Hong Kong Metropolitan University, Ho Man Tin, China (T.-W.L.).
3. School of Nursing, The Hong Kong Polytechnic University, China. (C.K.Y.L.)
4. Department of Psychiatry, Prince of Wales Hospital and Shatin Hospital, Hong Kong SAR, China (J.T.).