1. Reproductive Medicine Centre, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
2. Comprehensive Liver Cancer Center, Beijing 302 Hospital, Beijing 100039, P.R. China
3. Cardiff‑China Medical Research Collaborative, Cardiff University School of Medicine, Cardiff CF14 4XN, UK
4. Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Capital Medical University, Beijing100069, P.R. China