This function returns all the common GI symptoms. They are simply listed as is without grouping or mapping. They have been derived from a manual list with synonyms derived from the UMLS Methatharus using the browser.
See also
Other NLP - Lexicons:
BiopsyIndex(),
EventList(),
HistolType(),
LocationListLower(),
LocationListUniversal(),
LocationListUpper(),
LocationList(),
RFACath(),
WordsToNumbers()