LEMA ZULUAGA, G.; FERNANDEZ LAVERDE, M.; CORREA VARELA, A.; ZULETA TOBÓN, J. As-needed endotracheal suctioning protocol vs a routine endotracheal suctioning in Pediatric Intensive Care Unit: A randomized controlled trial. Colombia Médica, v. 49, n. 2, p. 139-147, 29 jun. 2018.