References
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- World Health Organization. Appropriate technology for birth. Lancet. 1985;2:436–7.
- Betràn AP, Merialdi M, Lauer JA, Bing-Shun W, Thomas J, Van Look P, Rates of caesarean section: analysis of global, regional and national estimates, Paediatric Perinatal. Epidemiol. 2007;21:981.