1. The Department of Child Health; Division of Applied Health Sciences; University of Aberdeen; Aberdeen UK
2. The Department of Paediatric Anaesthesia; Royal Aberdeen Children's Hospital; Aberdeen UK
3. Pharmacology Unit; University of Development Studies; Tamale Ghana
4. Department of Anesthesiology; University of Colorado Anschutz Medical Campus; Aurora CO USA
5. Department of Anesthesiology; Northwestern University Feinberg School of Medicine; Chicago IL USA
6. Department of Anesthesiology; Ann & Robert H. Lurie Children's Hospital of Chicago; Chicago IL USA
7. School of Pharmacy; Queen's University Belfast; Belfast UK
8. Department of Anaesthesiology; Faculty of Medicine and Health Science; University of Auckland; Auckland New Zealand