Headaches of an EBM believer.
Walling
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D003952:Diagnostic Imaging / Q000639:trends; D019317:Evidence-Based Medicine / Q000639:trends*; D005544:Forecasting; D006261:Headache / Q000145:classification*; D006801:Humans; D008329:Managed Care Programs / Q000639:trends; D011379:Prognosis