1. Australia’s mothers and babies 2007;Laws,2009
2. Births: final data for 2006, vol. 57;Martin,2009
3. Hospital episode statistics. Method of delivery, 1980 to 2007–8;HES Online,2009
4. European perinatal health report;Zeitlin,2004
5. Rates and implications of caesarean sections in Latin America: ecological study;Belizan;BMJ,1999