title: Tracking health services research studies.
authors.forename: Deborah A
authors.initials: DA
authors.lastname: Zarin
authors.forename: Tony
authors.initials: T
authors.lastname: Tse
mesh_terms: D035843:Biomedical Research; D002986:Clinical Trials as Topic; D006291:Health Policy; D006302:Health Services Research; D006801:Humans; D033181:Information Dissemination; D012042:Registries; D014481:United States