1. Department of Biomaterials, Shengjing Hospital of China Medical University, Shenyang 110004, PR China
2. Liaoning Research Institute of Family Planning (The Affiliated Reproductive Hospital of China Medical University), Shenyang 110031, PR China
3. College of Kinesiology, Shenyang Sport University, Shenyang 110102, PR China
4. China Medical University and Queen’s University Belfast, Shenyang 110122, PR China