1. Vaccine Evaluation Center, Division of Infectious and Immunological Diseases, Department of Pediatrics, BC Children's Hospital and the University of British Columbia, Vancouver, Canada
2. Department of Paediatrics, University of Oxford, United Kingdom
3. Canadian Center for Vaccinology, IWK Health Centre and Dalhousie University, Halifax, Nova Scotia
4. Division of Infectious Diseases, Department of Pediatrics, Stollery Children's Hospital and University of Alberta, Edmonton
5. Division of Infectious Disease, Children's Hospital of Eastern Ontario, Ottawa
6. Vaccine Preventable Bacterial Diseases, National Microbiology Laboratory, Winnipeg, Manitoba, Canada