Figure 1. Venn diagram showing the laboratory parameters and CT findings in COVID-19 patients. AB (+), positive antibody assay; AB (-), negative antibody assay; AB (0), antibody assay was not performed; RT-PCR (+), positive RT-PCR assay; RT-PCR (-), negative RT-PCR assay; RT-PCR (0), RT-PCR assay was not performed; CT (+), positive CT diagnosis; CT (-), negative CT diagnosis; CT (0), CT was not performed.