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1. An evidence-based health care system: the case for clinical trials registries : Office of Medical Applications of Research, National Institutes of Health [and] National Library of Medicine, Lister Hill Auditorium, Bethesda, Maryland, December 6-7, 1993

nlm:nlmuid-101120654-bk

5. Improving health professionals' access to information: challenges and opportunities for the National Library of Medicine

nlm:nlmuid-101627944-bk