[1] Guys & St Thomas NHS Fdn Trust, Dept Anaesthesia, London, England
[2] Univ Hosp Coventry & Warwickshire, Dept Anaesthesia, Coventry, W Midlands, England
[3] Imperial Coll London, London, England
[4] British Anaesthet Resp Equipment Manufacturers As, Bromley, England
[5] South East Scotland Sch Anaesthesia, Edinburgh, Midlothian, Scotland
[6] Assoc Anaesthetists Training Comm, Edinburgh, Midlothian, Scotland
[7] Link Ergon, Nottingham, England
[8] Imperial Coll Healthcare NHS Trust, Dept Anaesthesia, London, England
[9] Royal Coll Anaesthetists, London, England
[10] Dept Anaesthesia, Edinburgh, Midlothian, Scotland