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  Indian J Med Microbiol
 

Figure 18: The comparison of recovery rates of 1.(3.trifluoromethylphenyl) piperazine and 1.(3.chlorophenyl) piperazine in urine using solid-phase extraction

Figure 18: The comparison of recovery rates of 1.(3.trifluoromethylphenyl) piperazine and 1.(3.chlorophenyl) piperazine in urine using solid-phase extraction