Dillruba, Nurun Nahar, and Sagarmay Barua. “Haemoglobin, Serum Ferritin and Serum-Mineral Levels of the Elderly People: A Comparison Between Urban and Rural Community”. Bangladesh Journal of Nutrition 26, no. 1 (December 30, 2014): 7–14. Accessed September 13, 2025. https://banglajol.info/index.php/BJNUT/article/view/69739.