<prompt> Anti- GQ1b antibodies are positive in more than 90 cases ofAcute inflammatory demyelinating polyneuropathy AIDPAcute motor axonal neuropathyAMANAcute motor sensory axonal neuropathyAMSANMiller fisher syndrome  <response>: Anti - GQ1b antibody is found in miller fisher syndrome , a variety of Guillain Barre syndrome. 