                                 0HG, [d]{.smallcaps}-0-hydroxyglutarate; Cho, free choline; Cr, creatine; Gly, glycine; GPC, glycerophosphocholine; GSH, glutathione; GSSG, glutathione disulfide; MCI, myo-inositol to total choline index; MI, myo-inositol; NAA, *N*-acetylaspartate; PC, phosphocholine; PCr, phosphocreatine; tCho, total choline (\[Cho\] + \[PC\] + \[GPC\]); tGSH, total glutathione (\[GSH\] + \[GSSG\]).  The 