acquired metabolic disease
   |__nutrition disease
       |__nutritional deficiency disease
           |__acquired night blindness
           |__biotin deficiency
           |__choline deficiency disease
           |__copper deficiency myelopathy
           |__endemic goiter
           |__folic acid deficiency anemia
           |__Keshan disease
           |__pellagra
           |__pernicious anemia
           |__protein-deficiency anemia
           |__protein-energy malnutrition
           |   |__kwashiorkor
           |   |__marasmus
           |__pyridoxine deficiency anemia
           |__riboflavin deficiency
           |__scurvy
           |__thiamine deficiency disease
           |   |__beriberi(+)
           |   |__Wernicke-Korsakoff syndrome
           |__vitamin K deficiency bleeding