<prompt> Which of the following vitamin deficiency causes Wernicke Korsakoff syndrome?ThiaminRiboflavinNiacinCobalamin  <response>: Vitamin Functions Deficiency Disease B1 Coenzyme in pyruvate and a-ketoglutarate dehydrogenases, and transketolase Regulates Cl- channel in nerve conduction Peripheral nerve damage beriberi or central nervous system lesions Wernicke Korsakoff syndrome Reference: Harper; 30th edition; Page no: 550 