Source:http://linkedlifedata.com/resource/umls/id/C0728992
UWDA: Viscera located in the abdomen. Examples: There is only one set of abdominal viscera.,FMA: Set of organs located in the abdominal cavity. Examples: There is only one set of abdominal viscera.,FMA: Viscus located in the abdomen. Examples: liver, pancreas, stomach,UWDA: Viscus located in the abdomen. Examples: liver, pancreas, stomach