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 C09 Otorhinolaryngologic Diseases D010038 +
  C09.218 Ear Diseases D004427 +
   C09.218.458 Hearing Disorders D006311 +
    C09.218.458.341 Hearing Loss D034381 +
     C09.218.458.341.750 Hearing Loss, Functional D006315 

 F01 Behavior and Behavior Mechanisms D001520 +
  F01.145 Behavior D001519 +
   F01.145.126 Behavioral Symptoms D001526 +
    F01.145.126.875 Hearing Loss, Functional D006315