1. World Health Organization: Neonatal and Perinatal mortality: Country, Regional and Global estimates. 2006, WHO Publications Geneva: WHO, 69-
2. World Health Organization: Neonatal and Perinatal mortality: Country, Regional and Global estimates 2004. 2007, WHO Publications Geneva: WHO
3. National Bureau of Statistics, Dar es Salaam,Tanzania and ICF Macro, Calverton, Maryland, USA: Tanzania: DHS, 2010- Final report. 2011
4. Hinderaker SG, Olsen BE, Bergsjø PB, Gasheka P, Lie RT, Kvåle G: Perinatal Mortality in Northern Rural Tanzania. J Health Popul Nutr. 2003, 21: 8-17.
5. Mbaruku G, Van Roosmalen J, Kimondo I, Bilango F, Bergström S: Perinatal audit using the 3-delays model in western Tanzania. Int J Gynecol Obstet. 2009, 106: 85-88. 10.1016/j.ijgo.2009.04.008.