Kirisattayakul, Woranan, Jintanaporn Wattanathorn, Woraluk Somboonporn, Nawanan Piyavhatkul, Waranon Munkong, Nartnutda Morakotsriwan, Kamol Lertrat, and Bhalang SuriHarn. 2015. “The Combined Extract of Zea Mays (Purple Color) and Pandanus Amaryllifolius Based-Drink (MP1) Improves Working Memory and Psychological Fitness in Menopausal Volunteer”. Srinagarind Medical Journal 30 (5):53. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/39935.