Reproduced from -
Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults
C. Frerk, V. S. Mitchell, A. F. McNarry, C. Mendonca, R. Bhagrath, A. Patel, E. P. O’Sullivan, N. M. Woodall and I. Ahmad, Difficult Airway Society
intubation guidelines working group
British Journal of Anaesthesia, 115 (6): 827–848 (2015) doi:10.1093/bja/aev371
