Lema Zuluaga, G. L., Fernandez Laverde, M., Correa Varela, A. M. and Zuleta Tobón, J. (2018) “As-needed endotracheal suctioning protocol vs a routine endotracheal suctioning in Pediatric Intensive Care Unit: A randomized controlled trial”, Colombia Medica, 49(2), pp. 139–147. doi: 10.25100/cm.v49i2.2273.