1. Institute of Health Informatics; University College London; London UK
2. Faculty of Epidemiology & Population Health; London School of Hygiene & Tropical Medicine; London UK
3. MRC Centre for Outbreak Analysis and Modelling and NIHR Health Protection Research Unit in Modelling Methodology; Imperial College London School of Public Health; London UK
4. Modelling and Economics Unit; National Infection Service; Public Health England; London UK
5. National Infection Service; Public Health England; London UK
6. Health Protection and Influenza Research Group; Division of Epidemiology and Public Health; University of Nottingham; Nottingham UK
7. Institute of Epidemiology & Healthcare; University College London; London UK