Published on in Vol 19, No 12 (2017): December
1 Public Health England, London, United Kingdom
2 University College London, London, United Kingdom
3 Malawi Epidemiology and Intervention Research Unit, London School of Hygiene and Tropical Medicine, London, United Kingdom
4 Department of Computer Science, University College London, London, United Kingdom
5 Microsoft Research, Herzliya, Israel
6 Department of Computer Science, University of Copenhagen, Copenhagen, Denmark
*these authors contributed equally