Itaya, Yumi, Naoko Kuramoto, and Yoko Furukawa. 2022. “Menstrual Cup Use in Japanese Women: Subjective Evaluations and Changes in Menstrual Symptoms”. Women, Midwives and Midwifery 2 (2). Jakarta, Indonesia:1-14. https://wmmjournal.org/index.php/wmm/article/view/55.