J. Saimin, Y. . Purnamasari, and S. . Mulyawati, “Vaginal pH of Menopausal Women is Related to the Duration of Menopause: Keasaman Vagina Perempuan Menopause Berhubungan dengan Lamanya Menopause”, Indones J Obstet Gynecol, vol. 9, no. 2, pp. 74–77, Apr. 2021.