Lung field-based severity score (LFSS): a feasible tool to identify COVID-19 patients at high risk of progressing to critical disease

Xin’ang Jiang, Jun Hu, Qinling Jiang, Taohu Zhou, Fei Yao, Yi Sun, Qingyang Liu, Chao Zhou, Kang Shi, Xiaoqing Lin, Jie Li, Yueze Li, Qianxi Jin, Wenting Tu, Xiuxiu Zhou, Yun Wang, Xiaoyan Xin, Shiyuan Liu, Li Fan