1. Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, People’s Republic of China
2. Department of Pathology, The Fourth People’s Hospital of Jinan, Jinan, Shandong, People’s Republic of China
3. Department of Gynecology and Obstetrics, Clinical Medical School, Shandong University, Jinan, Shandong, People’s Republic of China
4. Department of Gynecology and Obstetrics, Jinan Central Hospital, Shandong University, Jinan, Shandong, People’s Republic of China