1. First Service of Anaesthesia and Intensive Care; Azienda Ospedaliera di Parma; Parma Italy
2. Department of Anesthesia; McGill University Health Centre; Montreal Children's Hospital; Montreal QC Canada
3. Department of Anaesthesia; Royal Aberdeen Children's Hospital; Aberdeen UK
4. Department of Anaesthesia and Pain Management; Royal Children's Hospital; Melbourne Vic. Australia
5. Service of Anaesthesia and Intensive Care; San Gerardo Hospital; Monza Italy