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Figure 1. Box-and-whiskers plots showing CRP serum levels before and 2 and 6 mos following treatment of periodontitis (N = 94). The box refers to the 25th (bottom) and 75th (up) percentiles, and the median is the horizontal line inside. P < 0.0001 Wilcoxon rank-sum paired test compared with baseline.

J DENT RES, Vol. 83, No. 2, 156-160 (2004)
DOI: 10.1177/154405910408300214

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