title: Regulation of circulating 1 alpha,25-dihydroxyvitamin D in beta-thalassemia.
mesh_terms: D002112:Calcifediol / Q000097:blood; D002117:Calcitriol / Q000097:blood*; D002118:Calcium / Q000097:blood; D006801:Humans; D012621:Seasons; D013789:Thalassemia / Q000097:blood*
chemical_list: D002117:Calcitriol; D002112:Calcifediol; D002118:Calcium