1. To err is human: building a safer health system,2000
2. The epidemiology of preventable adverse drug events: a review of the literature;von Laue;Wien Klin Wochenschr,2003
3. Kaiser Family Foundation. Prescription Drug Trends. In: Fact Sheet #3057-02 Kaiser Family Foundation, 2003.
4. National Ambulatory Care Survey: 1998 Summary, Advance Data from Vital and Health Statistics. In: U.S. Centers for Disease Control, National Center for Health Statistics, 2000.
5. Adherence to medication: a review of the existing literature;Horne,1998