1. Population estimates;Census Bureau,2000
2. Prescribing patterns for nursing home residents in the US. The reality and the vision;Broderick;Drugs Aging,1997
3. Drug use by the elderly in Italy;Nobili;Ann Pharmacother,1997
4. Polypharmacy in the ambulatory care of aged patients;Zanocchi;Recenti Prog Med,1999
5. Prescribed medicines: use, expenditures, and sources of payment;Kasper,1982