Department of Gynecology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China;
Department of Gynecology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China;
Department of Gynecology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China;
Department of Gynecology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China;
Department of Gynecology, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, China;