1. Measuring maternal mortality: what do we need to know?;AbouZahr,1999
2. Maternal mortality at the end of a decade: signs of progress?;AbouZahr;Bulletin of the World Health Organization,2001
3. Cost effectiveness analysis of strategies for maternal and neonatal health in developing countries;Adam;BMJ,2005
4. Anwar, I., Killewo, J., Chowdhury, M., & Dasgupta, S. (2005). Bangladesh: inequalities in utilization of maternal health care-evidence from matlab. In: Davidson Gwatkin, Adam Wagstaff, Abdo Yazbeck (Eds.) Reaching the poor with health, nutrition, and population services: what works, what doesn't, and why. (pp. 117--136) Washington DC: The International Bank for Reconstruction and Development/The World Bank.
5. Mind the gap: equity and trends in coverage of maternal, newborn, and child health services in 54 Countdown countries;Boerma;Lancet,2008