Solid-phase extraction and gas chromatography-mass spectrometry analysis of 11-nor-9-carboxy-δ9-tetrahydrocannabinol in urine for monitoring marijuana abuse

2020 ◽  
Vol 7 (3) ◽  
Author(s):  
Y.-Y. Tsai ◽  
S.-J. Tai ◽  
M.-C. Huang ◽  
B.-L. Chang ◽  
C.-H. Liao ◽  
...  
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