Created at	Source	Raw Value	Validated value
Oct. 26, 2020, 11:31 p.m.	usa	inclusion criteria: - age ≥ 65 - pneumonia at ct scan - pao2/fio2 ≥300 mmhg - presence of one or more comorbidities (consider the list provided in appendix a) - signed informed consent	inclusion criteria: - age ≥ 65 - pneumonia at ct scan - pao2/fio2 ≥300 mmhg - presence of one or more comorbidities (consider the list provided in appendix a) - signed informed consent