“Evidence based medicine is the conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients. The practice of evidence based medicine means integrating individual clinical expertise with the best available external clinical evidence from systematic research.” Sackett, D. L. (1996). Evidence based medicine: what it is and what it isn't. BMJ, 312, 71-72.
Journal review article describing 'evidence-based' concepts in nursing and medicine: Scott, K., & McSherry, R. (2009). Evidence-based nursing: clarifying the concepts for nurses in practice. Journal Of Clinical Nursing, 18(8), 1085-1095.