J. M. Beleña, M. Núñez, A. Vidal, C. Gasco, J. Yuste, and A. Kahn, “Comparison of the i-gelTM and the LMA ProsealTM in anesthetized patients undergoing laparoscopic cholecystectomy: a prospective, randomized clinical trial”, apic, pp. 135-140, Jan. 2019.