Abikusno, Nugroho. “Importance of Nutrition and Lifestyle for Elderly During the COVID-19 Pandemic”. Jurnal Biomedika dan Kesehatan 3, no. 3 (September 30, 2020): 109–111. Accessed March 29, 2024. https://jbiomedkes.org/index.php/jbk/article/view/142.