inclusion criteria: 1. adult male or female patients aged 18-85 years old; 2. the newly diagnosed covid-19 patients who meet the diagnostic criteria set forth in the "guidance of diagnosis and treatment for patients with coronavirus disease 2019 (covid-19) (procedural version 5 amendment)", issued by the national health commission of the people's republic of china on 8 february 2020; 3. patients whose blood oxygen saturation is not less than 90%. 4. patients who agree to participate in the study and voluntarily comply with the relevant requirements of the study.

inclusion criteria: 1. adult male or female patients aged 18-85 years old; 2. the newly diagnosed covid-19 patients who meet the diagnostic criteria set forth in the "guidance of diagnosis and treatment for patients with coronavirus disease 2019 (covid-19) (procedural version 5 amendment)", issued by the national health commission of the people's republic of china on 8 february 2020; 3. patients whose blood oxygen saturation is not less than 90%. 4. patients who agree to participate in the study and voluntarily comply with the relevant requirements of the study.

inclusion criteria: adult male or female patients aged 18-85 years old; the newly diagnosed covid-19 patients who meet the diagnostic criteria set forth in the "guidance of diagnosis and treatment for patients with coronavirus disease 2019 (covid-19) (procedural version 5 amendment)", issued by the national health commission of the people's republic of china on 8 february 2020; patients whose blood oxygen saturation is not less than 90%. patients who agree to participate in the study and voluntarily comply with the relevant requirements of the study.

inclusion criteria: adult male or female patients aged 18-85 years old; the newly diagnosed covid-19 patients who meet the diagnostic criteria set forth in the "guidance of diagnosis and treatment for patients with coronavirus disease 2019 (covid-19) (procedural version 5 amendment)", issued by the national health commission of the people's republic of china on 8 february 2020; patients whose blood oxygen saturation is not less than 90%. patients who agree to participate in the study and voluntarily comply with the relevant requirements of the study.

inclusion criteria: 1. adult male or female patients aged 18-85 years old; 2. the newly diagnosed covid-19 patients who meet the diagnostic criteria set forth in the "guidance of diagnosis and treatment for patients with coronavirus disease 2019 (covid-19) (procedural version 5 amendment)", issued by the national health commission of the people's republic of china on 8 february 2020; 3. patients whose blood oxygen saturation is not less than 90%. 4. patients who agree to participate in the study and voluntarily comply with the relevant requirements of the study.

inclusion criteria: 1. adult male or female patients aged 18-85 years old; 2. the newly diagnosed covid-19 patients who meet the diagnostic criteria set forth in the "guidance of diagnosis and treatment for patients with coronavirus disease 2019 (covid-19) (procedural version 5 amendment)", issued by the national health commission of the people's republic of china on 8 february 2020; 3. patients whose blood oxygen saturation is not less than 90%. 4. patients who agree to participate in the study and voluntarily comply with the relevant requirements of the study.