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Case Control Study
Copyright ©The Author(s) 2025.
World J Crit Care Med. Dec 9, 2025; 14(4): 108652
Published online Dec 9, 2025. doi: 10.5492/wjccm.v14.i4.108652
Figure 1
Figure 1 Flowchart showing the distribution of enrolled patients. COPD: Chronic obstructive pulmonary disease; HFNC: High flow nasal cannula; IMV: Invasive mechanical ventilation; NIV: Noninvasive ventilation.