All

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 C23 Pathological Conditions, Signs and Symptoms D013568 +
  C23.550 Pathologic Processes D010335 +
   C23.550.414 Hemorrhage D006470 +
    C23.550.414.788 Gastrointestinal Hemorrhage D006471 +
      C23.550.414.788.400 Hematemesis D006396 
      C23.550.414.788.600 Melena D008551 
      C23.550.414.788.700 Peptic Ulcer Hemorrhage D010438