GAD2 and type 2 diabetes mellitus: GAD-65: glutamic acid decarboxylase-65; ZnT8: zinc transporter 8; IA-2: islets antigen-2 autoantibody; MODY: maturity-onset diabetes of the young; ESR: erythrocyte sedimentation rate; SGPT: serum glutamate pyruvate transaminase; TSH: thyroid stimulating hormone; LDL: low-density lipoprotein; HDL: high-density lipoprotein