%0 Letter %T Probing the efficacy of high-flow nasal cannula in the treatment of acute exacerbations of COPD with acute-moderate hypercapnic respiratory failure. %A Pantazopoulos I %A Mavrovouni G %J Crit Care %V 28 %N 1 %D 2024 Aug 5 %M 39103951 %F 19.334 %R 10.1186/s13054-024-05050-7