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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.

Gambassi G., Landi F., Peng L., Brostrup-Jensen C., Calore K., Hirdes J., Lipsitz L., Mor V., Bernabei R..  1998.  Validity of diagnostic and drug data in standardized nursing home resident assessments: potential for geriatric pharmacoepidemiology. SAGE Study Group. Systematic Assessment of Geriatric drug use via Epidemiology. Medical Care. 36(2):167-79.

Gambassi G., Lapane K., Sgadari A., Landi F., Carbonin P., Hume A., Lipsitz L., Mor V., Bernabei R..  1998.  Prevalence, clinical correlates, and treatment of hypertension in elderly nursing home residents. SAGE (Systematic Assessment of Geriatric Drug Use via Epidemiology) Study Group. Arch Intern Med. 158(21):2377-85.