1. World economic outlook: the global demographic transition;International Monetary Fund,2004
2. UNP9400. 1994. World Population. Prospects 1994. Department of International Economic and Social Affairs, United Nations. (Tape) New York: UN.
3. Global Burden of Disease in 2002: data sources, methods and results. Global Programme on Evidence for Health Policy Discussion Paper Number 54;Mathers,2003
4. The impact of socioeconomic status on hospital use in New York City;Billings;Health Aff,1993
5. Brunswick A, Aidala A, Dobkin J, Howard J, Titus S, Banaszak-Hall J.HIV-1 of epidemiology 1993;104:107-23.