title: Health services research: an expanding field of inquiry.
authors.affiliation: Institute of Medicine, National Academy of Sciences, Washington, DC 20418, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Field
authors.forename: K N
authors.initials: KN
authors.lastname: Lohr
mesh_terms: D006297:Health Services Accessibility; D006302:Health Services Research / Q000639:trends*; D006801:Humans; D015969:National Academies of Science, Engineering, and Medicine, U.S., Health and Medicine Division; D009937:Organizational Objectives; D010043:Outcome and Process Assessment, Health Care; D010348:Patient Care Team / Q000458:organization & administration; D011787:Quality of Health Care; D014481:United States