1. School of Nursing; Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong Hong Kong
2. The First People's Hospital of Huaihua and University of South China; Huaihua City China
3. School of Nursing; The Hong Kong Polytechnic University; Hong Kong Hong Kong
4. The Third Xiangya Hospital of Central South University; Changsha China
5. Department of Neurology; University of Munich; Munich Germany