Are we doing the right number of echocardiograms?
Pearlman
Alan S
AS
D004452:Echocardiography / Q000191:economics* / Q000706:statistics & numerical data*; D017048:Health Care Costs / Q000706:statistics & numerical data*; D010818:Practice Patterns, Physicians' / Q000191:economics* / Q000706:statistics & numerical data*; D014481:United States