Early Versus Late Endotracheal Intubation in Subjects with COVID-19 Pneumonia Treated with High-Flow Oxygen: A Retrospective Observational Study - Nadeem, Rashid; Alheraki, Muhannad; Dar, Farooq; Hussein, Karim S; Mirza, Hina; Aijazi, Ishma; ElZeiny, Moatz G; Awadh, Neama A; Osman, Hadeel; Albwidani, Rawan (Curēus (Palo Alto, CA), 2023)