Figure 1From: Short-term effects of high-dose oral vitamin D3 in critically ill vitamin D deficient patients: a randomized, double-blind, placebo-controlled pilot studyMean 25-hydroxyvitamin D levels (±SEM) after a single enteral dose of 540,000 IU vitamin D3 or placebo in vitamin D deficient patients at a medical ICU. The numbers given below the study days refer to the number of patients per group.Back to article page