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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: J Pharm Biomed Anal. 2011 Mar 5;55(3):487–493. doi: 10.1016/j.jpba.2011.01.040

Figure 1.

Figure 1

Representative chromatograms of the lowest calibration standard (0.25 ng/ml) of (A) alfentanil and (B) midazolam in human plasma.