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Hair
Gas Chromatography-Mass Spectrometry
Substance Abuse Detection
Administration, Oral
Chromatography, Liquid
Codeine
Cocaine
Narcotics
Melanins
Reference Standards
Morphine
Alprazolam
Rats
Hair Color
Reproducibility of Results
Area Under Curve
Calibration
Time Factors
Drug Dose Response Relationship
Substance-Related Disorders
Co-Publications
22
15
7
6
5
4
3
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