1. 2019-nCoV infected patients treated at Affiliated Zhongshan Hospital of Dalian University and Zhongnan Hospital of Wuhan University from January 2020 to December 2020 2. nCoV nucleic acid positive, 3. Aged >=18 years, 4. Patients understand the purpose of the trial, voluntarily sign informed consent, and agree to complete the rectification research process.

1. 2019-nCoV infected patients treated at Affiliated Zhongshan Hospital of Dalian University and Zhongnan Hospital of Wuhan University from January 2020 to December 2020 2. nCoV nucleic acid positive, 3. Aged >=18 years, 4. Patients understand the purpose of the trial, voluntarily sign informed consent, and agree to complete the rectification research process.