Predictive Factors of Mortality in Patients with Severe COVID-19 Treated in the Intensive Care Unit: A Single-Center Study in Vietnam oleh Sy Duong-Quy, Duc Huynh-Truong-Anh, Thanh Nguyen-Thi-Kim, Tien Nguyen-Quang, Thuy Tran-Ngoc-Anh, Nam Nguyen-Van-Hoai, Mai Do-Thi-Thu, Thanh Nguyen-Chi, Toi Nguyen-Van, Tram Tang-Thi-Thao, Anh Nguyen-Tuan, Quan Nguyen-Hoang, Phung Hoang-Phi-Tuyet, Giap Vu-Van, Hieu Nguyen-Lan, Chuong Nguyen-Hong, Sy Dinh-Ngoc, Dung Truong-Viet, Vinh Nguyen-Nhu, Thai Nguyen-Duy