1. Department of Respiratory, Qingdao Eighth People's Hospital, Qingdao, Shandong, China.
2. Department of Orthopedic Surgery, Qingdao University, Qingdao, Shandong, China.
3. Department of Tramotology and Orthopedics, Pingyi Hospital of Traditional Chinese Medicine, Linyi, Shandong, China.
4. Department of Sports Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.