TY - JOUR AU - Dai, Qingqing AU - Ye, Ming AU - Tang, Zhiqiang AU - Yu, Kaijiang AU - Gao, Yang AU - Yang, Zhenyu AU - Zheng, Junbo AU - Zuo, Shu AU - Liu, Yan AU - Xie, Fengjie AU - Han, Qiuyuan AU - He, Hua AU - Wang, Hongliang PY - 2021 TI - Comparison of severe and critical COVID-19 patients imported from Russia with and without influenza A infection in Heilongjiang Province: a retrospective study JF - Annals of Translational Medicine; Vol 9, No 18 (September 30, 2021): Annals of Translational Medicine Y2 - 2021 KW - N2 - UR - https://atm.amegroups.org/article/view/78387