Practice guidelines for management of the difficult airway: an updated report by the American Society of Anesthesiologists Task Force on Management of the Difficult Airway - Apfelbaum, J L; Hagberg, C A; Caplan, R A; Blitt, C D; Connis, R T; Nickinovich, D G; Hagberg, C A; Caplan, R A; Benumof, J L; Berry, F A; Blitt, C D; Bode, R H; Cheney, F W; Connis, R T; Guidry, O F; Nickinovich, D G; Ovassapian, A (Anesthesiology, 2013)