Factors associated with prolonged mechanical ventilation in children with pulmonary failure: Cohort study from the LARed Network registry Juan Sebastián Barajas-Romero; Pablo Vásquez-Hoyos; Rosalba Pardo; Juan Camilo Jaramillo-Bustamante; Regina Grigolli; Nicolas Monteverde-Fernández; Sebastián Gonzalez-Dambrauskas; Roberto Jabornisky; Pablo Cruces; Adriana Wegner; Franco Díaz; Pietro Pietroboni;