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9. Brehm JM, Schuemann B, Fuhlbrigge AL, et al. Serum vitamin D levels and severe asthma exacerbations in the Childhood Asthma Management Program study. J Allergy Clin Immunol 2010; 126:5258.e5.10. Searing DA, Zhang Y, Murphy JR, et al. Decreased serum vitamin D levels in children with asthma are associated with increased corticosteroid use. J Aller Clin Immun 2010; 125:9951000.11. Chinellato I, Piazza M, Sandri M, et al. Vitamin D serum levels and markers of asthma control in Italian children. J Pediatrics 2011; 158:437441.12. Chinellato I, Piazza M, Sandri M, et al. Serum vitamin D levels and exercise-induced bronchoconstriction in children with asthma. Eur Respir J 2011; 37:13661370.13. Majak P, Olszowiec-Chlebna M, Smejda K, Stelmach I. Vitamin D supplementation in children may prevent asthma exacerbation triggered by acute respiratory infection. J Allergy Clin Immunol 2011; 127:12941296.

14. Chishimba L, Thickett DR, Stockley RA, Wood AM. The vitamin D axis in the lung: a key role for vitamin D-binding protein. Thorax 2010; 65:456462.15. Lee SH, Kim KH, Kim JM, et al. Relationship between group-specific component protein and the development of asthma. Am J Resp Crit Care Med 2011; 184:528536.16. Chun RF, Lauridsen AL, Suon L, et al. Vitamin D-binding protein directs monocyte responses to 25-hydroxy- and 1 25-dihydroxyvitamin D. J Clin Endocrinol Metab 2010; 95:33683376.

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