title: Vitamin D--an essential nutrient.
authors: Weber State University, USA. sitzmank@comcast.net
authors: Kathy
authors: K
authors: Sitzman
mesh_terms: D019587:Dietary Supplements; D006801:Humans; D014807:Vitamin D / Q000627:therapeutic use*; D014808:Vitamin D Deficiency / Q000188:drug therapy*
chemical_list: D014807:Vitamin D