Fig. 3From: Aberrations of biochemical indicators in amyotrophic lateral sclerosis: a systematic review and meta-analysisForest plot showing separate analysis of serum transferrin based on control type (a) and high-density lipoprotein cholesterol based on ethnicity (b). Values and the corresponding 95% confidence intervals of individual studies are indicated by short solid lines. The weighted mean difference (WMD) and 95% confidence intervals are indicated by diamondsBack to article page