Fuentes-Garcìa, V.E., E. Morales-Pérez, and J.C. Ramìrez-Mora, et al. 2006. “A Randomized Trial Comparing Laryngeal Mask Airway to Endotracheal Tube in Children Undergoing Upper Gastrointestinal Endoscopy”. Acta Biomedica Atenei Parmensis 77 (2): 90-94. https://mattioli1885journals.com/index.php/actabiomedica/article/view/1992.