1. Department of Internal Medicine, CR and WISCO General Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei 430080, P.R. China
2. Department of Biochemistry and Molecular Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
3. Health and Family Planning Committee of Qingshan, Wuhan, Hubei 430080, P.R. China