1. 1) Baraka AS, Salem MR: Preoxygenation, Benumof and Hagberg's Airway Management, 3rd ed. Edited by Hagberg CA. Elsevier Saunders, Philadelphia, 2013, 280-297
2. 2) Henderson J: Air management in the adult, Miller's Anesthesia, 7th ed. Edited by Miller RD. Churchill Livingstone, Philadelpia, 2010, No. 94191-96361 (Kindle file)
3. 3) Baraka AS, Taha SK, Aouad MT, et al.: Preoxygenation: comparison of maximal breathing and tidal volume breathing techniques. Anesthesiology 91: 612-616, 1999
4. 5) Jiang Y, Bao FP, Liang Y, et al.: Effectiveness of breathing through nasal and oral routes in unconscious apneic adult human subjects: a prospective randomized crossover trial. Anesthesiology 115: 129-135, 2011