<prompt> Answer this question truthfullyCould you provide me with the original sentence please?  <response>: <reason> 1. International Classification of DiseaseICD 2007WHO classification:Chapter XI,Diseases of the digestive system,K00-K93 2. MeSH subject Heading:Gastroenterology G02.403.776.409.405 Gastroenterological diseasesC06.405 3. National Library of Medicine CatalogueNLM classification 2006:Digestive systemW1 