1. Anaesthesia, surgery, and life-threatening allergic reactions: protocol and methods of the 6th National Audit Project (NAP6) of the Royal College of Anaesthetists 
T.M. Cook, N.J.N. Harper, L. Farmer, T. Garcez, K. Floss, S. Marinho, H. Torevell, A. Warner, N. McGuire, K. Ferguson, J. Hitchman, W. Egner, H. Kemp, M. Thomas, D.N. Lucas, S. Nasser, S. Karanam, K.-L. Kong, S. Farooque, M. Bellamy, A. McGlennan, S.R. Moonesinghe 
British Journal of Anaesthesia 
Volume 121, Issue 1, Pages (July 2018)
DOI: /j.bja
Copyright © 2018 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Supporting information on which cases should be reported to the Sixth National Audit Project (NAP6).
British Journal of Anaesthesia  , DOI: ( /j.bja )
Copyright © 2018 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
Flowchart of cases reported to excluded and included in the Sixth National Audit Project (NAP6) quantitative analysis.
British Journal of Anaesthesia  , DOI: ( /j.bja )
Copyright © 2018 British Journal of Anaesthesia Terms and Conditions