Neutralizing Antibodies and Cellular Immune Responses Against SARS-CoV-2 Sustained One and a Half Years After Natural Infection oleh Li-na Yan, Pan-pan Liu, Xu-gui Li, Shi-jing Zhou, Hao Li, Zhi-yin Wang, Feng Shen, Bi-chao Lu, Yu Long, Xiao Xiao, Zhen-dong Wang, Dan Li, Hui-ju Han, Hao Yu, Shu-han Zhou, Wen-liang Lv, Xue-jie Yu