1. Department of Paediatric Anaesthesia and Intensive Care, Royal Hospital for Sick Children, Yorkhill NHS Trust, Glasgow G3 8SJ, Scotland, UK,
2. Department of Anesthesia, Flemish Free University of Brussels, Laarbeeklan 101, 1090 Brussels, Belgium,
3. Department of Anaesthetics, Sheffield Children's Hospital, Western Bank, Sheffield S10 2TH,
4. Bispebjerg Hospital, Bispebjerg Bakke, 2400 København NV, Denmark,
5. Department of Anaesthetics, Regionsykehuset i Trondheim, 7001 Trondheim, Norway,
6. Anestesidivisionen sektion III, Sahlgrenska sjukhuset, 413 45 Göteborg, Sweden,
7. Départment d’anesthésiologie, Hôpital Saint Vincent de Paul, 74/82 avenue Denfert‐Rochereau, 75674 Paris Cedex 14, France,
8. Klinik für Anaesthesiologie und Intensivmedizin, Universitätskliniken des Saarlandes, Oscar‐Orth‐Straße, 66421 Homburg/Saar, Germany,
9. Gastrointestinal Clinical Research Department, Glaxo Research and Development Limited, Greenford Road, Greenford, Middlesex UB6 0HE, UK