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Effects of calcitriol on lung function and IL-13 and IL-17A levels. Cytokine production was separated based on individual changes in absolute lung function (ΔFEV1) in response to 2 weeks of prednisolone before (baseline; black bars) and after (after 4 weeks of calcitriol and 2 weeks of prednisolone; white bars) treatment. Numbers of patients with SR asthma are indicated in parentheses above.
