Lema Zuluaga, G., M. Fernandez Laverde, A. 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”. Colombia Médica, Vol. 49, no. 2, June 2018, pp. 139-47, doi:10.25100/cm.v49i2.2273.