G. L. Lema Zuluaga, M. Fernandez Laverde, A. M. Correa Varela, and J. Zuleta Tobón, “As-needed endotracheal suctioning protocol vs a routine endotracheal suctioning in Pediatric Intensive Care Unit: A randomized controlled trial”, Colomb Med, vol. 49, no. 2, pp. 139–147, Jun. 2018.