“Imunosenesens Dan Kerentanan Populasi Usia Lanjut Terhadap Coronavirus Disease 2019 (Covid-19)”. Integrative Perspectives of Social and Science Journal 3, no. 08 Agustus (August 7, 2026): 386–393. Accessed October 21, 2026. https://ipssj.com/index.php/ojs/article/view/1886.