Bolaños Díaz, Rafael, César Sanabria Montañez, José Francia Romero, and Carlos De La Puente. 2009. “Cost-Effectiveness of Hormone Replacement Therapy (HRT) Compared to Isoflavones in Post-Menopausal Osteoporosis”. ACTA MEDICA PERUANA 26 (1), 27 - 34. https://amp.cmp.org.pe/index.php/AMP/article/view/1491.