1. Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong S.A.R.
2. Department of International Health, Johns Hopkins University, Baltimore, Maryland, United States
3. Bill and Melinda Gates Foundation, Enteric and Diarrheal Diseases, Seattle, Washington, United States
4. Centers for Disease Control and Prevention, Division of Viral Diseases, Atlanta, Georgia, United States
5. PATH, Center for Vaccine Innovation and Access, Seattle, Washington, United States