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2. Effect of body mass index on pregnancy outcomes in nulliparous women delivering singleton babies;Bhattacharya;BMC Public Health,2007
3. What is the cost of maternal health care and how can it be financed?;Borghi,2001
4. Human rights aspects of safe motherhood;Fathalla;Best Practice & Research in Clinical Obstetrics & Gynaecology,2006
5. The familial technique for linking maternal death and poverty;Graham;Lancet,2004