title: Practice variation: implications for our health care system.
authors.affiliation: Center for the Evaluative Clinical Sciences, Dartmouth Medical School, NH, USA.
authors.forename: John E
authors.initials: JE
authors.lastname: Wennberg
mesh_terms: D003695:Delivery of Health Care / Q000458:organization & administration* / Q000592:standards; D015276:Health Care Rationing; D010818:Practice Patterns, Physicians' / Q000458:organization & administration*; D011785:Quality Assurance, Health Care; D017062:Small-Area Analysis; D014481:United States