1 Wellcome Trust Brighton and Sussex Centre for Global Health Research, Brighton and Sussex Medical School, Brighton, BN1 9PX, UK; School of Public Health, Addis Ababa University, Addis Ababa, Ethiopia. Electronic address: kebededeka@yahoo.com.
2 Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK.
3 Wellcome Trust Brighton and Sussex Centre for Global Health Research, Brighton and Sussex Medical School, Brighton, BN1 9PX, UK.
4 Kenya Medical Research Institute-Wellcome Trust Research Programme, Nairobi, Kenya.
5 School of Public Health, Addis Ababa University, Addis Ababa, Ethiopia.
6 Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA.
7 Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA; Oxford Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK.
8 Bill and Melinda Gates Foundation, Seattle, WA, USA.