Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleSevere Vitamin D Deficiency: A Biomarker of Exacerbation Risk?AuthorsHEULENS, NELE; DECRAMER, MARC; JANSSENS, WIM; KUNISAKI, KEN M.; NIEWOEHNER, DENNIS E.; CONNETT, JOHN E.PublicationAmerican Journal of Respiratory & Critical Care Medicine, 2013, Vol 187, Issue 2, p214ISSN1073-449XPublication typeArticleDOI10.1164/ajrccm.187.2.214a