1. Nursing Department, The Eastern Hospital of the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
2. Department of Spine Surgery, The Eastern Hospital of the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
3. Department of Interventional Radiology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)