“Utility and Timing of the Respiratory Rate-Oxygenation Index in the Prediction of High-Flow Oxygen Therapy Failure in Acute Hypoxemic Respiratory Failure of Infective Etiology: A Prospective Observational Study”. Monaldi Archives for Chest Disease 94, no. 1 (May 16, 2023). Accessed June 10, 2025. https://www.monaldi-archives.org/macd/article/view/2509.