* inclusion criteria: 1. 18 years old or older 2. patients who have been confirmed of covid-19 infection and has evidence for pneumonia * confirmation of covid-19 infection by rt-pcr of sars-cov-2 * definite diagnosis of new infiltration of the lungs by chest ct scan of chest radiographic inspection 3. patients who are within 72 hours of covid-19 pneumonia confirmation 4. patients with 3(hospitalization, not requiring supplemental oxygen) or higher in seven-category ordinal scale of clinical status * seven-category ordinal scale of clinical status 1. not hospitalized with resumption of normal activities; 2. not hospitalized, but unable to resume normal activities; 3. hospitalization, not requiring supplemental oxygen; 4. hospitalization, requiring supplemental oxygen; 5. hospitalization, requiring nasal high-flow oxygen therapy and/or noninvasive mechanical ventilation; 6. hospitalization, requiring extracorporeal membrane oxygenation and/or invasive mechanical ventilation; 7. death. 5. patients who are eligible for diagnosis/evaluation to chest ct scan and related to it 6. patients should be able to understand the essence of the clinical trial and to submit a written consent document. for the patients who can understand the nature of the research but cannot sign the document, a relative can agree to the study. *

* inclusion criteria: 1. 18 years old or older 2. patients who have been confirmed of covid-19 infection and has evidence for pneumonia * confirmation of covid-19 infection by rt-pcr of sars-cov-2 * definite diagnosis of new infiltration of the lungs by chest ct scan of chest radiographic inspection 3. patients who are within 72 hours of covid-19 pneumonia confirmation 4. patients with 3(hospitalization, not requiring supplemental oxygen) or higher in seven-category ordinal scale of clinical status * seven-category ordinal scale of clinical status 1. not hospitalized with resumption of normal activities; 2. not hospitalized, but unable to resume normal activities; 3. hospitalization, not requiring supplemental oxygen; 4. hospitalization, requiring supplemental oxygen; 5. hospitalization, requiring nasal high-flow oxygen therapy and/or noninvasive mechanical ventilation; 6. hospitalization, requiring extracorporeal membrane oxygenation and/or invasive mechanical ventilation; 7. death. 5. patients who are eligible for diagnosis/evaluation to chest ct scan and related to it 6. patients should be able to understand the essence of the clinical trial and to submit a written consent document. for the patients who can understand the nature of the research but cannot sign the document, a relative can agree to the study. *

inclusion criteria: 18 years old or older patients who have been confirmed of covid-19 infection and has evidence for pneumonia confirmation of covid-19 infection by rt-pcr of sars-cov-2 definite diagnosis of new infiltration of the lungs by chest ct scan of chest radiographic inspection patients who are within 72 hours of covid-19 pneumonia confirmation patients with 3(hospitalization, not requiring supplemental oxygen) or higher in seven-category ordinal scale of clinical status seven-category ordinal scale of clinical status not hospitalized with resumption of normal activities; not hospitalized, but unable to resume normal activities; hospitalization, not requiring supplemental oxygen; hospitalization, requiring supplemental oxygen; hospitalization, requiring nasal high-flow oxygen therapy and/or noninvasive mechanical ventilation; hospitalization, requiring extracorporeal membrane oxygenation and/or invasive mechanical ventilation; death. patients who are eligible for diagnosis/evaluation to chest ct scan and related to it patients should be able to understand the essence of the clinical trial and to submit a written consent document. for the patients who can understand the nature of the research but cannot sign the document, a relative can agree to the study.

inclusion criteria: 18 years old or older patients who have been confirmed of covid-19 infection and has evidence for pneumonia confirmation of covid-19 infection by rt-pcr of sars-cov-2 definite diagnosis of new infiltration of the lungs by chest ct scan of chest radiographic inspection patients who are within 72 hours of covid-19 pneumonia confirmation patients with 3(hospitalization, not requiring supplemental oxygen) or higher in seven-category ordinal scale of clinical status seven-category ordinal scale of clinical status not hospitalized with resumption of normal activities; not hospitalized, but unable to resume normal activities; hospitalization, not requiring supplemental oxygen; hospitalization, requiring supplemental oxygen; hospitalization, requiring nasal high-flow oxygen therapy and/or noninvasive mechanical ventilation; hospitalization, requiring extracorporeal membrane oxygenation and/or invasive mechanical ventilation; death. patients who are eligible for diagnosis/evaluation to chest ct scan and related to it patients should be able to understand the essence of the clinical trial and to submit a written consent document. for the patients who can understand the nature of the research but cannot sign the document, a relative can agree to the study.

- inclusion criteria: 1. 18 years old or older 2. patients who have been confirmed of covid-19 infection and has evidence for pneumonia - confirmation of covid-19 infection by rt-pcr of sars-cov-2 - definite diagnosis of new infiltration of the lungs by chest ct scan of chest radiographic inspection 3. patients who are within 72 hours of covid-19 pneumonia confirmation 4. patients with 3(hospitalization, not requiring supplemental oxygen) or higher in seven-category ordinal scale of clinical status - seven-category ordinal scale of clinical status 1. not hospitalized with resumption of normal activities; 2. not hospitalized, but unable to resume normal activities; 3. hospitalization, not requiring supplemental oxygen; 4. hospitalization, requiring supplemental oxygen; 5. hospitalization, requiring nasal high-flow oxygen therapy and/or noninvasive mechanical ventilation; 6. hospitalization, requiring extracorporeal membrane oxygenation and/or invasive mechanical ventilation; 7. death. 5. patients who are eligible for diagnosis/evaluation to chest ct scan and related to it 6. patients should be able to understand the essence of the clinical trial and to submit a written consent document. for the patients who can understand the nature of the research but cannot sign the document, a relative can agree to the study. -

- inclusion criteria: 1. 18 years old or older 2. patients who have been confirmed of covid-19 infection and has evidence for pneumonia - confirmation of covid-19 infection by rt-pcr of sars-cov-2 - definite diagnosis of new infiltration of the lungs by chest ct scan of chest radiographic inspection 3. patients who are within 72 hours of covid-19 pneumonia confirmation 4. patients with 3(hospitalization, not requiring supplemental oxygen) or higher in seven-category ordinal scale of clinical status - seven-category ordinal scale of clinical status 1. not hospitalized with resumption of normal activities; 2. not hospitalized, but unable to resume normal activities; 3. hospitalization, not requiring supplemental oxygen; 4. hospitalization, requiring supplemental oxygen; 5. hospitalization, requiring nasal high-flow oxygen therapy and/or noninvasive mechanical ventilation; 6. hospitalization, requiring extracorporeal membrane oxygenation and/or invasive mechanical ventilation; 7. death. 5. patients who are eligible for diagnosis/evaluation to chest ct scan and related to it 6. patients should be able to understand the essence of the clinical trial and to submit a written consent document. for the patients who can understand the nature of the research but cannot sign the document, a relative can agree to the study. -