title: Health services research: an evolving definition of the field.
authors.affiliation: Research Triangle Institute, Research Triangle Park, NC 27709-2194, USA.
authors.forename: Kathleen N
authors.initials: KN
authors.lastname: Lohr
authors.forename: Donald M
authors.initials: DM
authors.lastname: Steinwachs
mesh_terms: D003695:Delivery of Health Care; D005069:Evaluation Studies as Topic; D006297:Health Services Accessibility; D006302:Health Services Research / Q000145:classification* / Q000639:trends; D015969:National Academies of Science, Engineering, and Medicine, U.S., Health and Medicine Division; D009307:National Academy of Sciences, U.S.; D012952:Societies; D009626:Terminology as Topic; D014481:United States