Source:http://linkedlifedata.com/resource/umls/id/C0824486
FMA: Anatomical cluster which has as its direct parts all or some members of one or more organ types which are grouped together according to some shared attributes. Examples: abdominal viscera, pelvic viscera.,UWDA: Anatomical cluster which consists of all or some members of one or more organ subclasses which are grouped together according to some shared attributes. Examples: abdominal viscera, pelvic viscera.