1. Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China
2. Qingdao Medical College, Qingdao University, Qingdao, Shandong 266000, China
3. Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China.