Affiliation: | aDepartment of Obstetrics and Gynecology, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Tao-Yuan, Taiwan bGraduate Institute of Clinical Medical Sciences, Chang Gung University College of Medicine, Tao-Yuan, Taiwan cDepartment of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut |