Edijanto, Soebagijo Poegoeh, Gilang Nugraha, Nurul Qomariyah, and Nur Laily Azzakia. “Differences in Ferritin and Serum Iron Levels in Elderly Coffee Consumers and Non-Coffee Consumers: Perbedaan Kadar Ferritin Dan Besi Serum Pada Lansia Pengonsumsi Kopi Dan Bukan Pengonsumsi Kopi”. Medicra (Journal of Medical Laboratory Science/Technology) 9, no. 1 (July 16, 2026): 33–38. Accessed July 26, 2026. https://medicra.umsida.ac.id/index.php/medicra/article/view/1813.