1. College of Medicine, Qingdao
University, Qingdao, China
2. Centre for Reproductive Medicine, Women and Children’s Hospital, Qingdao University, Qingdao, China
3. Branch of
Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, China
4. Department of Genetics and Cell Biology, Basic Medical College, Qingdao University,
Qingdao, China
5. Qingdao Central Hospital, University of Health and Rehabilitation Sciences, Qingdao, China