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Minimum preinfection serum citrulline in patients with and without catheter-related bloodstream infections (CRBSIs). Individual data points (triangles) and group means (horizontal lines) are shown. Citrulline was lower in patients with CRBSI (6.6 ± 4.1 μmol/L) than in those without (11.3 ± 6.4 μmol/L) (P = .009).
