1. Peden M, et al. World report on road traffic injury prevention. Geneva: World Health Organization; 2004.
2. Murray CJ, Lopez AD. The global burden of disease: a comprehensive assessment of mortality and disability from diseases, injuries, and risk factors in 1990 and projected to 2020: summary. 1996.
3. Violence, et al. Global status report on road safety: time for action. Geneva: World Health Organization; 2009.
4. Ncube M, et al. Mortality in Africa: the share of road traffic fatalities. Abidjan: African Development Bank; 2013.
5. Eckersley W, Salmon R, Gebru M. Khat, driver impairment and road traffic injuries: a view from Ethiopia. Bull World Health Organ. 2010;88(3):235–6.