1. Vitamin D supplementation to prevent asthma exacerbations – Authors' reply 
Adrian Martineau 
The Lancet Respiratory Medicine 
Volume 6, Issue 6, Pages e26-e27 (June 2018)
DOI: /S (18)
Copyright © 2018 Elsevier Ltd Terms and Conditions

2. Figure
Two-step individual participant data meta-analysis, event rate for asthma exacerbations requiring treatment with systemic corticosteroids with the trial by Megan Jensen and colleagues5 excluded
Weights are from random-effects analysis. *Only one asthma exacerbation requiring treatment with systemic corticosteroids arose in this trial, therefore, an adjusted incidence rate ratio could not be calculated.
The Lancet Respiratory Medicine 2018 6, e26-e27DOI: ( /S (18) )
Copyright © 2018 Elsevier Ltd Terms and Conditions