title: Vitamin D "resistance" and the bioavailability of calciferol tablets.
mesh_terms: D004351:Drug Resistance; D004872:Ergocalciferols / Q000008:administration & dosage*; D006801:Humans; D013607:Tablets; D014807:Vitamin D / Q000008:administration & dosage*
chemical_list: D004872:Ergocalciferols; D013607:Tablets; D014807:Vitamin D