Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
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
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