Belkiz Gungor, Buket, Mahmut Gungor, İbrahim Taymur, Rustem Askin, Hakan Demirci, Yakup Akpinar, and Almila Ikra Akgul. “The Effect of Perimenopausal Estrogen Levels on Depression and Anxiety: A Pilot Study”. The European Research Journal 1, no. 1 (March 3, 2015): 8–13. Accessed April 5, 2026. https://eurj.org.tr/article/view/4.