1. Anhui Provincial Children Hospital Hefei China
2. The Discipline of Child and Adolescent Health Faculty of Medicine and Health The Children's Hospital Westmead Clinical School The University of Sydney Westmead NSW Australia
3. Department of Infectious Diseases and Microbiology The Children's Hospital at Westmead Westmead NSW Australia
4. National Centre for Immunisation Research and Surveillance (NCIRS) The Children's Hospital at Westmead Westmead NSW Australia