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Urine Drug Testing Is Still an Invaluable Resource for Primary Care
Joanna L. Starrels, MD, MS; Daniel P. Alford, MD, MPH; Barbara J. Turner, MD, MSEd, Executive Deputy Editor
Annals of Internal Medicine 2010;153:420-421.
doi:10.7326/0003-4819-153-6-201009210-00019
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