| ABC | Autism Behavior Checklist |
| ASD | Autism Spectrum Disorder |
| CARS | Childhood Autism Rating Scale |
| MTHFR | Methylenetetrahydrofolate reductase |
| MTR | Methionine synthase |
| MTRR | Methionine synthase reductase |
| PEP-3 | Psycho-Educational Profile, Third Edition |
| PCR | Polymerase chain reaction |
| RCT | Randomized controlled trial |
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