title: Introduction: Comparative effectiveness research-objectives, challenges, and contributions of the US Department of Veterans Affairs.
authors.affiliation: Office of Research and Development, US Department of Veterans Affairs, Washington, District of Columbia, USA.
authors.forename: Joel
authors.initials: J
authors.lastname: Kupersmith
mesh_terms: D057186:Comparative Effectiveness Research / Q000458:organization & administration / Q000639:trends; D006801:Humans; D014481:United States; D014493:United States Department of Veterans Affairs