1. (1). Human Development Network. Health, Nutrition and Population. Washington, D. C.: Sector Strategy Pap er. World Bank; 1997.
2. (2). WHO. The World Health Report 2000—Health sys-tems: improving performance. Ginebra: Organiza-ción Mundial de la Salud; 2000.
3. (3). COM. Communication from the Commission to the Council and the European Parliament: Health and Poverty Reduction in Developing Countries, p. 129. Brussels: Commission of the European Communi-ties; 2002.
4. (4). Human Development Network. Health, Nutrition and Population. Washington, D. C.: World Bank; 1993.
5. (5). WHO. The World Health Report 1999: Making a Di-fference. Ginebra: Organización Mundial de la Salud; 1999.