Affiliation: | 1. Department of Anorectum, the Fourth Affiliated Hospital, CMU, Shenyang, PR China;2. IVF Center, Affiliated Shengjing Hospital, CMU, Shenyang, PR China;3. Department of Physiology, Basic Medical Scientific Research College, CMU, Shenyang, PR China;4. Department of Biochemistry and Molecular Biology, CMU, Shenyang, PR China;5. Central Laboratory of the Fourth Affiliated Hospital, China Medical University (CMU), Shenyang, PR China |