1 Barcelona Institute for Global Health (ISGlobal), Hospital Clínic, University of Barcelona, Barcelona, Spain.
2 Department of Metabolism, Digestion & Reproduction, Imperial College London, London, United Kingdom; MRC Centre for Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom.
3 Journal of Health Communication: International Perspectives, City University of New York (CUNY) Graduate School of Public Health & Health Policy, New York, USA.
4 MRC Centre for Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom. Electronic address: m.thursz@imperial.ac.uk.