The rising trend in outpatient testing.
D000553:Ambulatory Care; D019411:Clinical Laboratory Techniques / Q000706:statistics & numerical data*; D003625:Data Collection; D006748:Hospital Departments / Q000706:statistics & numerical data*; D008389:Marketing of Health Services; D010337:Pathology Department, Hospital / Q000706:statistics & numerical data*; D014481:United States