CT manifestations and clinical features of COVID⁃19 patients with nucleic acid conversion in Guangzhou
HUANG Jiamei, YUAN Chao, HUANG Deyang, LIU Jinxin, YU Chengcheng, ZHANG Lieguang
The Journal of Practical Medicine . 2020, (21): 2889 -2893 .  DOI: 10.3969/j.issn.1006⁃5725.2020.21.001