1. Alberta Research Centre for Health Evidence; Department of Pediatrics; University of Alberta; Edmonton AB Canada
2. Institute of Child Health; Alder Hey Children's Hospital; University of Liverpool; Liverpool UK
3. Department of Emergency Medicine and School of Public Health; University of Alberta; Edmonton AB Canada
4. Clinical Pharmacology Unit; Instituto de Medicina Molecular; University of Lisbon; Lisboa Portugal
5. Department of Pediatrics; Lisbon Academic Medical Centre; Santa Maria Hospital; Lisboa Portugal