Estrogenic Effect of the Leaves from Katuk (Sauropus androgynus L. Merr) on Vaginal and Endometrial Atrophy in Perimenopausal Mice, Susilowati, Retno, Khoiriyah Lailatul, and Hikmah Exma Mutatal , Pharmacognosy Journal, March 2020, Volume 12, Issue 2, p.240-245, (2020)