1. Engel A Siderius P (1967) The Consumption of Drugs: Report of a Study 1966-1967 (World Health Organization, Geneva).
2. The measurement of drug consumption
3. World Health Organization (2003) Introduction to Drug Utilization Research (World Health Organization, Geneva). Available at https://www.whocc.no/filearchive/publications/drug_utilization_research.pdf. Accessed October 15, 2018.
4. Penicillins’ defined daily doses must be changed
5. Global increase and geographic convergence in antibiotic consumption between 2000 and 2015