1. Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
2. Department of Orthopaedic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
3. Department of Orthopedics, Chenzhou No. 1 People’s Hospital, Xiangnan University, Chenzhou, Hunan, China
4. Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, Hunan, China
5. Department of Respiratory Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospita, Changsha, Hunan, China
6. Department of Spine Surgery, Longhui People’s Hospital, Shaoyang, Hunan, China
7. Department of General Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China