Created at	Source	Raw Value	Validated value
June 25, 2024, noon	usa	inclusion criteria: * patients age ≥18 years * confirmed to have covid-19 pneumonia by nasopharyngeal swab pcr together with chest radiology * requiring invasive mechanical ventilation.	inclusion criteria: * patients age ≥18 years * confirmed to have covid-19 pneumonia by nasopharyngeal swab pcr together with chest radiology * requiring invasive mechanical ventilation.
Dec. 31, 2021, 5 a.m.	usa	inclusion criteria: patients age ≥18 years confirmed to have covid-19 pneumonia by nasopharyngeal swab pcr together with chest radiology requiring invasive mechanical ventilation.	inclusion criteria: patients age ≥18 years confirmed to have covid-19 pneumonia by nasopharyngeal swab pcr together with chest radiology requiring invasive mechanical ventilation.