Xiong, Lu, Mei Han, Chunmiao Wang, Kai Liu, and Tao Liu. “Frailty Is an Independent Determinant of COVID-19 Vaccine Hesitancy in the Elderly: A Cross-Sectional Study: Frailty Is a Determinant of COVID-19 Vaccine Hesitancy”. Cellular and Molecular Biology 68, no. 4 (April 30, 2022): 202–207. Accessed November 21, 2024. https://mail.cellmolbiol.org/index.php/CMB/article/view/4382.