Miyazaki Y, Komasawa N, Matsunami S, Kusaka Y, Minami T. J Anesth. 2015;29(5):654-9
Trial on 84 adults assigned to either laryngoscopy or control groups, with number of attempts to successful insertion and difficulty of insertion the primary outcomes measured. Results suggest that laryngoscopy facilitates i-gel insertion by novice doctors.
Link to abstract