1. World Bank. World development indicators 2011, data.worldbank.org/indicator; 2011.
2. Health for all database;World Health Organisation,2012
3. Controlling health care costs;Ginsburg;The New England Journal of Medicine,2004
4. OECD health data 2011;OECD,2011
5. Generic medicines: Greek physicians perceptions and prescribing practices;Tsiantou;Journal of Clinical Pharmacy and Therapeutics,2009