title: Reasons for ambulatory care differ.
authors: S
authors: S
authors: Lutz
mesh_terms: D000553:Ambulatory Care / Q000706:statistics & numerical data*; D003625:Data Collection; D006780:Hospitals, Rural / Q000706:statistics & numerical data*; D006786:Hospitals, Urban / Q000706:statistics & numerical data*; D014481:United States