Author information:
(1)Family Planning Research Institute, Tongji Medical College, Huazhong 
University of Science and Technology, Wuhan 430030, China.
(2)Family Planning Research Institute, Tongji Medical College, Huazhong 
University of Science and Technology, Wuhan 430030, China; Wuhan Tongji 
Reproductive Medicine Hospital, Wuhan 430013, China.
(3)Wuhan Tongji Reproductive Medicine Hospital, Wuhan 430013, China.
(4)Zhong Shen Bioscience Inc., Wuhan, China.
(5)Department of Cell Biology and Neuroscience, Montana State University, 
Bozeman, MT 59717, USA; Department of Chemistry and Biochemistry, Montana State 
University, Bozeman, MT 59717, USA.
(6)Family Planning Research Institute, Tongji Medical College, Huazhong 
University of Science and Technology, Wuhan 430030, China; Wuhan Tongji 
Reproductive Medicine Hospital, Wuhan 430013, China. Electronic address: 
clxiong951@sina.com.