1. School of Nursing, Weifang University of Science and Technology, Weifang, Shandong 262700, China
2. General Practice Department, Qingdao Municipal Hospital, Qingdao, Shandong 266071, China
3. School of Nursing, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
4. Neurology Department, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China
5. School of Nursing, Qingdao University, Qingdao, Shandong 266071, China