title: Vitamin D economy in gastrointestinal disease.
mesh_terms: D005767:Gastrointestinal Diseases / Q000378:metabolism*; D006801:Humans; D008107:Liver Diseases / Q000150:complications; D014807:Vitamin D / Q000378:metabolism*; D014808:Vitamin D Deficiency / Q000209:etiology
chemical_list: D014807:Vitamin D