Effect of Vitamin D Supplementation on Procalcitonin as Prognostic Biomarker in Patients with Ventilator Associated Pneumonia Complicated with Vitamin D Deficiency.

However, in the placebo group, procalcitonin levels not only did not drop, but also showed an increasing trend with an average of two-fold higher than the cut points reported by the previous studies ( 16 ). which is well in line with the higher rate of mortality in this group.

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