Operation on gastrointestinal tract (procedure)

• GI - Gastrointestinal operation
• GIT - Gastrointestinal tract operation
• Gut operation
• Operation on gastrointestinal tract

• Procedure on digestive system (procedure) and Role group (attribute) some (
      Method (attribute) some Surgical action (qualifier value) and
      Procedure site (attribute) some Gastrointestinal tract structure (body structure))

• Procedure on gastrointestinal tract (procedure)
• Operation on digestive tract (procedure)