1 Population Health Sciences Institute, Newcastle University, Newcastle, UK Courtney.McNamara@newcastle.ac.uk.
2 Centre for Global Health Inequalities Research, Department of Sociology and Political Science, Norwegian University of Science and Technology, Trondheim, Norway.
3 Policy and International Health, WHO Collaborating Centre on Investment in Health and Wellbeing, Public Health Wales, Wales, UK.
4 Department of International Health, Care and Public Health Research Institute (CAPHRI), Maastricht University, Netherlands.
5 Department of Health Policy, London School of Economics and Political Science, London, UK.
6 Public Health Institute, Faculty of Health, Liverpool John Moores University, Liverpool, UK.