Mean +/- standard deviation of the individual metabolite concentrations (mM) as well as metabolite concentration ratios in the NAWM by group and time.

Mean +/- standard deviation of the individual metabolite concentrations (mM) as well as metabolite concentration ratios in the NAWM by group and time.按组别及时间维度统计的正常外观脑白质（NAWM）内单个代谢物浓度（mM）的均值±标准差，以及代谢物浓度比值。