1. Global, regional, and national levels and causes of maternal mortality during 1990–2013: a systematic analysis for the Global Burden of Disease Study 2015;NJ Kassebaum;Lancet,2016
2. Trends and causes of maternal mortality in Ethiopia during 1990–2013: findings from the Global Burden of Diseases study 2013;Caroline O. Laurence Gizachew Assefa Tessema;BMC Public Health,2017
3. Ethiopia Demographic and Health Survey 2016,2016
4. Ethiopian Public Health Institute and Federal Ministry of Health Addis Ababa, Ethiopia. Ethiopian Emergency Obstetric and Newborn Care (EmONC) Assessment 2016, Final Report. Averting Maternal Death and Disability (AMDD), Columbia University New York, USA September 2017
5. APPROPRIATE TECHNOLOGY FOR BIRTH;The Lancet,1985