1 Center for Communicable Disease Dynamics and Department of Epidemiology, Harvard School of Public Health, Boston, Massachussetts, USA.
2 Flowminder Foundation, Stockholm, Sweden; Center for Communicable Disease Dynamics and Department of Epidemiology, Harvard School of Public Health, Boston, Massachussetts, USA.
3 Flowminder Foundation, Stockholm, Sweden; Department of Public Health Sciences, Karolinska Institute, Stockholm, Sweden.
4 Flowminder Foundation, Stockholm, Sweden; Department of Management, Stockholm School of Economics, Stockholm, Sweden.
5 Flowminder Foundation, Stockholm, Sweden; College of Information System and Management, National University of Defense Technology, Changsha, China.
6 Flowminder Foundation, Stockholm, Sweden; Department of Geography and Environment, University of Southampton, Southampton, UK; Fogarty International Center, National Institutes of Health, Besthesda, Maryland, USA.