1. Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
2. Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
3. Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, P. R. China
4. Human Genetics Resource Preservation Center in Hubei, Zhongnan Hospital of Wuhan University, Wuhan 430071, P. R. China
5. Department of Chemistry and Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, Oklahoma 73019, United States