Affiliation: | 1. Department of Public Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan;2. Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan;3. Department of Reproductive Health, Unit of Nursing, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan |