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Serum levels of vitamin B12 (cobalamin) in fibromyalgia

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This study was funded by CNPq and Federico Foundation.

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Correspondence to Jozélio Freire de Carvalho.

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Authors A and B declare that he/she has no conflict of interest.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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de Carvalho, J.F., Silva, D.N.F. Serum levels of vitamin B12 (cobalamin) in fibromyalgia. Rheumatol Int 36, 741–742 (2016).

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  • Ferritin
  • Homocysteine
  • Fibromyalgia
  • Chronic Fatigue Syndrome
  • Cobalamin