1. Closing the gap between research and practice: an overview of systematic reviews of interventions to promote the implementation of research findings;Bero;British Medical Journal,1998
2. An Introduction to Medical Statistics;Bland,2002
3. Canadian Task Force, 1997. Task force classification of study designs. Canadian Medical Association Journal 121, 1193–1254.
4. Clinical Resource and Audit Group, 1993. Clinical Guidelines: A report of a working party. Scottish Office Home and Health Department, Edinburgh.
5. Commission for Healthcare Audit and Inspection, 2005. Assessment for Improvement: The Annual Health Check. Healthcare Commission, London.