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BackgroundAlthough polymorphisms of the catechol‐O‐methyl transferase (COMT) gene have been implicated in altered pain sensitivity, results concerning the association between COMT gene polymorphisms and fibromyalgia (FM) are equivocal. We assessed the associations between COMT single‐nucleotide polymorphisms (SNP) and FM risk and symptom severity.
MethodsIn total, 409 FM patients and 423 controls...
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