Nutrition in gastrointestinal disease.
D003362:Cost-Benefit Analysis; D004750:Enteral Nutrition; D005767:Gastrointestinal Diseases / Q000150:complications / Q000178:diet therapy / Q000378:metabolism*; D006801:Humans; D009748:Nutrition Disorders / Q000178:diet therapy / Q000209:etiology*; D009751:Nutritional Requirements; D010288:Parenteral Nutrition