Center for Reproductive Medicine;
Shandong Provincial Hospital Affiliatedto Shandong University;
Shandong Provincial Key Laboratory of Reproductive Medicine;
Jinan 250021;
China;
National Research Center for Assisted Reproductive Technology and Reproductive Genetics;
Jinan 250021;
China;
The Key Laboratory for Reproductive Endocrinology of Ministry of Education;
Jinan 250021;
China;
Department of Anesthesiology;
Shandong Provincial Hospital Affiliated to Shandong University;
Jinan 250021;
China.;
