Clinical value of laboratory indicators for predicting disease progression and death in patients with COVID-19: a retrospective cohort study oleh Ying Wang, Qian Wang, Jie Cheng, Jun Lin, Jian-Ping Wang, Jian Shang, Jing Wan, You-qin Yan, Wen-bin Liu, Hai-Ping Zhang, Xiao-yue Wang, Zi-ang Li