1. Clinic for Anaesthesiology and Intensive Care Medicine; Hanover Medical School; Hanover Germany
2. Department of Anaesthesiology and Intensive Care Medicine; Cnopf′sche Kinderklinik/Klinik Hallerwiese; Nuremberg Germany
3. Department of Pediatric and Adolescent Medicine; University Hospital Dresden; Dresden Germany
4. Department of Anesthesia; Klinikum Klagenfurt; Klagenfurt Austria
5. Department of Anaesthesia, Paediatric Intensive Care and Emergency Medicine; Auf der Bult Children′s Hospital; Hanover Germany
6. Department of Anesthesiology and Intensive Care Medicine; University Hospital of Leipzig; Leipzig Germany
7. Section of Paediatric Anaesthesia; Department of Anaesthesia; Kantonsspital; Luzern Switzerland
8. Department of Anaesthesiology and Intensive Care Medicine; Klinikum Stuttgart; Olgahospital; Stuttgart Germany
9. Department of Intensive and Intermediate Care Medicine; University Hospital of RWTH Aachen; Aachen Germany
10. Department of Pediatric Kidney, Liver and Metabolic Diseases; Hanover Medical School; Hanover Germany
11. Department of Anesthesiology; Ulm University Medical Center; Ulm Germany
12. Clinic for Anesthesiology, Perioperative Medicine and Pain Therapy; HELIOS Klinikum Berlin Buch; Berlin Germany
13. Department of Anesthesia; University Children's Hospital Zurich; Zurich Switzerland