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.

Landi F., Lattanzio F., Gambassi G., Zuccala G., Sgadari A., Panfilo M., Ruffilli M.P, Bernabei R..  1999.  A model for integrated home care of frail older patients: the Silver Network project. SILVERNET-HC Study Group. Aging (Milano). 11(4):262-72.