%0 Journal Article %T Vitamin D deficiency in Crohn's disease: Prevalence, risk factors and supplement use in an outpatient setting %A Nic Suibhne, Treasa %A Cox, Gerry %A Healy, Martin %A O'Morain, Colm %A O'Sullivan, Maria %J Journal of Crohn's and Colitis %V 6 %N 2 %P 182-188 %@ 1873-9946 %D 2012-03-01 %I Elsevier Science %~ DeepDyve