New technology: costly? Or cost-effective?
Dill
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D002764:Cholecystitis / Q000000981:diagnostic imaging; D003362:Cost-Benefit Analysis; D005260:Female; D006801:Humans; D013677:Medical Laboratory Science / Q000191:economics*; D008875:Middle Aged; D013675:Technology, High-Cost; D014463:Ultrasonography / Q000191:economics* / Q000379:methods