... jour-nals. The selected journals were The New England Jour-nal of Medi cine, JAMA, Lancet, BMJ, Annals of InternalMedicine, Quality and Safety in Health Care, The Amer-ican Journal of Managed Care, ... Combined Approach 1 (quality ADJ3 improv$).ab, ti. OR (quality ADJ3 enhance$).ab, ti.2 (quality of health care OR quality assurance, health care OR quality indicators, healthcare OR health plan ... various forms of continuing education, quali ty assurance, informatics, financial, organisational, and reg-ulatory interventions that can affect the ability of health-care professionals to deliver...