title: Big guys getting bigger: study. Small doc practices still lead, but numbers shrinking.
authors.forename: Andis
authors.initials: A
authors.lastname: Robeznieks
mesh_terms: D002322:Career Mobility; D006123:Group Practice / Q000706:statistics & numerical data / Q000639:trends*; D019538:Health Care Surveys; D011331:Private Practice / Q000706:statistics & numerical data / Q000639:trends*; D011785:Quality Assurance, Health Care; D014481:United States