title: Challenges and opportunities for primary care evaluation.
authors.forename: Nancy L
authors.initials: NL
authors.lastname: Keating
authors.forename: John Z
authors.initials: JZ
authors.lastname: Ayanian
mesh_terms: D019317:Evidence-Based Medicine; D006302:Health Services Research; D006801:Humans; D010817:Physician-Patient Relations; D011320:Primary Health Care / Q000592:standards*; D019984:Quality Indicators, Health Care