1. World Health Organisation and UNICEF. Countdown 2015: building a future for women and children, the 2012 Report. http://countdown2015mnch.org/documents/2012Report/2012-Complete.pdf (accessed 9 Nov 2013).
2. Strategies for reducing maternal mortality: getting on with what works;Campbell;Lancet,2006
3. Measuring the need for life-saving obstetric surgery in developing countries;Ronsmans;BJOG,2004
4. Appropriate technology for birth;World Health Organization;Lancet,1985
5. Rates of caesarean section: analysis of global, regional and national estimates;Betrán;Paediatr Perinat Epidemiol,2007