1. Practice guidelines for management of the difficult airway: A report;American Society of Anesthesiologists Task Force on Management of the Difficult Airway;Anesthesiology,1993
2. Does the airway examination predict difficult intubation?;Hagberg,2004
3. Prediction of difficult mask ventilation;Langeron;Anesthesiology,2000
4. An updated report by the American Society of Anesthesiologists Task Force on the Management of the Difficult Airway;Practice Guidelines for the Management of the Difficult Airway;Anesthesiology,2003
5. Effective dissemination of critical airway information: The Medical Alert National Difficult Airway/Intubation Registry;Mark,2007