Pusparini, Yenny (2020) “Holotranscobalamin and Homocysteine as Biomarkers of Vitamin B12 Deficiency in Elderly Females”, International Journal of Advanced Science and Technology, 29(05), pp. 447 - 455. Available at: http://sersc.org/journals/index.php/IJAST/article/view/9561 (Accessed: 1May2026).