1. Department of Orthopedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
2. Department of Gynecology, Zhangqiu People's Hospital, Jinan, Shandong 250200, P.R. China
3. State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, P.R. China
4. Department of Orthopedics, Zhangqiu People's Hospital, Jinan, Shandong 250200, P.R. China