Lema Zuluaga, Gloria, Mauricio Fernandez Laverde, Ana Correa Varela, and John Zuleta Tobón. 2018. “As-Needed Endotracheal Suctioning Protocol Vs a Routine Endotracheal Suctioning in Pediatric Intensive Care Unit: A Randomized Controlled Trial”. Colombia Médica 49 (2), 139-47. https://doi.org/10.25100/cm.v49i2.2273.