Box Plot from Scientific Research

Cross-sectional analysis of 94 infants (median age 12 months) correlating pVLs with plasma concentrations of LPV. The normal range of LPV trough levels is 4,000–6,000 ng ml −1 ; <150 ng ml −1 is below the level of quantification. The P value shown was determined using the two-sided Mann–Whitney U -test.

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