*Databases
Bernabei, R., Gambassi, G., Lapane, K., Sgadari, A., Landi, F., Gatsonis, C., Lipsitz, L., Mor, V. 1999. Characteristics of the SAGE database: a new resource for research on outcomes in long-term care. SAGE (Systematic Assessment of Geriatric drug use via Epidemiology) Study Group. J Gerontol A Biol Sci Med Sci. 54 (1) M25-33.