We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleSeasonal variation of serum 25-hydroxyvitamin D levels in adult patients with inflammatory bowel disease.AuthorsBours, P.; Wielders, J.; Vermeijden, J.; Wiel, A.PublicationOsteoporosis International, 2011, Vol 22, Issue 11, p2857ISSN0937-941xPublication typearticleDOI10.1007/s00198-010-1484-y