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3. Ministry of Health and Family Welfare, Government of India https://nrhm-mis.nic.in/UI/FamilyWelfare2011/Complete%20BOOK/Complete%20BOOK.pdf
4. Registrar General India Centre for Global Health Research Canada Sample Registration System. Maternal mortality in India: 1997-2003: Trends, causes and risk factors http://www.health.mp.gov.in/Maternal_Mortality_in_India_1997-2003.pdf