Valenzuela, Carlos Y. “Fiesta Vs. Stress Condition the Incidence and the Age at Menarche. Forty Years of Research”. Clinical Journal of Obstetrics and Gynecology 8, no. 3 (August 5, 2025): 069–073. Accessed January 21, 2026. https://www.obstetricgynecoljournal.com/index.php/cjog/article/view/cjog-aid1190.