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Number of CECs according to NPI GPG (median [IQR], 8 [4–8] cells/ml), MPG (8 [4–12] cells/ml), and PPG (14 [8–22] cells/ml). The Kruskal-Wallis test reports a significant difference at P < .001 with higher levels in the PPG compared with the other two groups (Tukey post hoc test, P < .05).
