Burden of digestive diseases in the United States part II: lower gastrointestinal diseases.
Everhart
James E
JE
Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland, USA.
Ruhl
Constance E
CE
D016099:Endoscopy, Gastrointestinal; D005767:Gastrointestinal Diseases / Q000175:diagnosis* / Q000453:epidemiology*; D006801:Humans; D014481:United States / Q000453:epidemiology