No abstract available
MeSH terms
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Adolescent
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Comorbidity
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Fatigue Syndrome, Chronic* / epidemiology
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Fatigue Syndrome, Chronic* / genetics
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Genotype
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Humans
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Methylenetetrahydrofolate Reductase (NADPH2) / genetics
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Mutation
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Narcolepsy*
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Postural Orthostatic Tachycardia Syndrome* / genetics
Substances
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MTHFR protein, human
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Methylenetetrahydrofolate Reductase (NADPH2)