Source:http://linkedlifedata.com/resource/umls/id/C0017163
MSH: A subspecialty of internal medicine concerned with the study of the physiology and diseases of the digestive system and related structures (esophagus, liver, gallbladder, and pancreas).,CHV: branch of medicine dealing with the study of disorders affecting the stomach, intestines, and associated organs,NCI: The branch of medicine that focuses on diagnosis and treatment of conditions affecting the gastrointestinal tract.