Fig. 2. Meta-analysis of vitamin B12 levels (A) and intake (B) between ASD and control group. Weights are from random effects analysis.
ASD, autism spectrum disorders; SMD, standardized mean difference; CI, confidence interval; AD, autistic disorder; PDD-NOS, Pervasive Developmental Disorders Not Otherwise Specified; AS, Asperger syndrome; MMA, methylmalonic acid.

2023;21:617~633 https://doi.org/10.9758/cpn.22.1040

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