1. Management Department, University of Paris 1 Pantheon-Sorbonne, Paris, France
2. Anthropology, Risk and Decision Science, London School of Hygiene & Tropical Medicine, London, UK
3. Vaccine Confidence Project, London School of Hygiene & Tropical Medicine, London, UK
4. Global Immunisation Communication, UNICEF, New York, USA
5. Department of Health Metrics Sciences, University of Washington, Seattle, Washington, USA
6. University of Antwerp, Antwerp, Belgium
7. Department of ENT, Faculty of Medicine, The University of Tabriz, Tabriz, Iran