1. Department of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, No. 415 Fengyang Road, Shanghai, 200003, China
2. Department of Orthopedic Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Shandong, China
3. Department of General Practice, The 960th Hospital of PLA, Jinan, China