1 Departments of Obstetrics and Gynecology (Drs. Wu, Wang, Weng, and Chao), Chang Gung Memorial Hospital Linkou Medical Center.
2 Departments of Pathology (Dr. Chen), Chang Gung Memorial Hospital Linkou Medical Center.
3 Departments of Obstetrics and Gynecology (Drs. Wu, Wang, Weng, and Chao), Chang Gung Memorial Hospital Linkou Medical Center; Gynecologic Cancer Research Center, Chang Gung University College of Medicine (Dr. Chao), Taoyuan, Taiwan. Electronic address: drangiechao@gmail.com.