1 School of Population Health and Environmental Sciences, King's College London, London, UK. Electronic address: http://www.alexanderkumar.com.
2 Centre for Global Health Research, Brighton & Sussex Medical School, Brighton, UK; School of Public Health, Addis Ababa University, Addis Ababa, Ethiopia.
3 NTD Department, Disease Prevention & Control Directorate, Federal Ministry of Health, Addis Ababa, Ethiopia.