References
- Abou Zahr C. and Royston E. (1991) Maternal Mortality: A Global Factbook. Geneva, World Health Organisation.
- Babinszki A., Kerenyi T., Torok 0., Grazi V., Lapinski R.H. and Berkowitz R.L. (1999) Perinatal outcome in grand and grate grand multiparity: effects of parity on obstetric risk factors. American Journal of Obstetrics and Gynecology, 181, 669–674.
- Buehler J.W., Kaunitz A.M., Hogue C.J.R., Hughes J.M., Smith J.C. and Rochat R.W. (1986) Maternal mortality in women aged 35 years or older: United States. Journal of the American Medical Association, 255, 53–57.
- Cunningham F.G., Grant N.F., Leveno K.J., Gilstrap L.C., Hauth J.C. and Wenstrom K.D. (2001) Williams Obstetrics, 21st edition, chapter 25, pp. 619–671. New York, McGraw Hill.
- Liljestrand J. (1999) Reducing perinatal and maternal mortality in the world: the major challenges. British Journal of Obstetrics and Gynaecology, 106, 877— 880.
- Pittrof R. and Johanson R. (1996) Safe motherhood—an achievable and worthwhile aim. In: Progress in Obstetrics and Gynaecology, edited by Studd J., vol 12, p. 47. Edinburgh, Churchill Livingstone.
- World Health Organisation (1998) Health Across the Life Span. The World Health Report. Geneva, World Health Organisa-tion.