Book Review: NAP4. 4th National Audit Project of the Royal College of Anaesthetists and the Difficult Airway Society. Major Complications of airway management in the United Kingdom. Report and Findings March 2011.

Woodall N.M. , Cook T.M. National census of airway management techniques used for anaesthesia in the UK: first phase of the Fourth National Audit Project at the Royal College of Anaesthetists. Br J Anaesth 2011; 106: 266–271.

Cook T.M. , Woodall N. , Frerk C. Major complications of airway management in the UK: results of the Fourth National Audit Project of the Royal College of Anaesthetists and the Difficult Airway Society. Part 1: anaesthesia. Br J Anaesth 2011; 106: 617–631.

Cook T.M. , Woodall N. , Harper J. , Benger J. Major complications of airway management in the UK: results of the Fourth National Audit Project of the Royal College of Anaesthetists and the Difficult Airway Society. Part 2: intensive care and emergency departments. Br J Anaesth 2011; 106: 632–642.