| Institution: | 1. Department of Obstetrics and Gynecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China;2. Key Laboratory of Birth Regulation and Control Technology of National Health and Family Planning Commission of China, Jinan, Shandong, China;3. Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China;4. National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong, China;5. The Key laboratory for Reproductive Endocrinology of Ministry of Education, Shandong, China;6. Maternal and Child Health Care of Shandong Province, Jinan, Shandong, China |
