Learning disability.
D001205:Ascorbic Acid / Q000627:therapeutic use*; D002648:Child; D005260:Female; D006801:Humans; D007859:Learning Disabilities / Q000188:drug therapy*; D008297:Male; D008774:Methylphenidate / Q000627:therapeutic use; D009536:Niacinamide / Q000627:therapeutic use*
D008774:Methylphenidate; D009536:Niacinamide; D001205:Ascorbic Acid