High flow nasal cannula therapy in children: working principles and treatment failure predictors. - Volakli, Eleni; Svirkos, Menelaos; Violaki, Asimina; Chochliourou, Elpis; Kalamitsou, Serafeia; Avramidou, Vasiliki; Katsafiloudi, Maria; Iordanidou, Despoina; Karantaglis, Nikolaos; Sdougka, Maria (Signa Vitae, 2022)