1. Kinsella K, Velkoff VA. An Aging World: 2001. U.S. Census Bureau International Population Reports P95/01-1. Washington, DC: Government Printing Office, 2001.
2. World Health Organization. The World Health Report 2002 “Reducing risks, promoting healthy life”. Geneva: WHO, 2002.
3. Menotti A, Seccareccia F, Lanti M, et al. The Italian Rifle Pooling Project. Risk factors and life expectancy. Mean levels and distributions of some cardiovascular risk factors in Italy in the 1970’s and the 1980’s. G Ital Cardiol 1995; 25: 1539–72.
4. Maggi S, Zucchetto M, Grigoletto F, et al. The Italian Longitudinal Study on Aging (ILSA): design and methods. Aging Clin Exp Res 1994; 6: 464–73.
5. ISTAT. Le condizioni di salute della popolazione. Indagine Multi-scopo sulle famiglie “Condizioni di salute e ricorso ai servizi sanitari”, Anni 1999–2000. Roma: Collana Informazioni Ed, 2001: 170.