Footnotes

• Competing interests: AMM is clinical adviser to The Laryngeal Mask Company, St Helier, Jersey, Channel Islands, UK, and also to Intavent Orthofix, Maidenhead, UK, and a distributor of LMA devices in the UK and Eire. Both are unsalaried positions, but the author has received payment for advisory work undertaken for both companies in connection with the use of LMA devices in prehospital care.