We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleBlood concentrations of dihydroxylated vitamin D metabolites after an oral dose.AuthorsMason, R S; Lissner, D; Posen, S; Norman, A WPublicationBritish medical journal, 1980, Vol 280, Issue 6212, p449ISSN0007-1447Publication typeJournal ArticleDOI10.1136/bmj.280.6212.449-a