1. Nethersole School of Nursing, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, 8/F, Esther Lee Building, Shatin, NT, Hong Kong
2. School of Nursing, Yunnan University of Traditional Chinese Medicine, Kunming, Yunnan, China
3. Neurology Department, Yunnan Provincial Hospital of Traditional Chinese Medicine, Kunming, Yunnan, China
4. School of Nursing and Midwifery, Queen's University Belfast, Belfast, UK