Disorders of the aging GI system.
D000367:Age Factors; D000368:Aged; D000375:Aging; D001660:Biliary Tract Diseases; D003248:Constipation / Q000628:therapy; D004935:Esophageal Diseases; D005260:Female; D005705:Gallbladder Diseases; D005767:Gastrointestinal Diseases / Q000209:etiology; D005770:Gastrointestinal Neoplasms; D006801:Humans; D007410:Intestinal Diseases; D008107:Liver Diseases; D008297:Male; D008875:Middle Aged; D010182:Pancreatic Diseases; D010437:Peptic Ulcer; D011602:Psychophysiologic Disorders; D012737:Sex Factors; D013272:Stomach Diseases