#Address correspondence to:
Dr. Lingying Wu, Department of Gynecologic Oncology, National Cancer Center/ National Clinical Research Center for Cancer/ Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuan Nanli, Chaoyang District, Beijing 100021, China; Tel: +86-010-87788996; Email:wulingying@csco.org.cn
Dr. Kun Song, Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, 107 Wenhua Xi Road, Ji’nan 250012, Shandong Province, China. Tel: 86-0531-82169269; Fax: 86-0531-82169268; Email:songkun2001226@sdu.edu.cn