Serum IgG activity against cyclic citrullinated peptide in patients evaluated for rheumatoid factor correlates with

M G Zavala-Cerna1, A Nava, E García-Castañeda

  • 1Unidad de Investigación Médica en Epidemiología Clínica, UMAE, HE, CMNO, IMSS, Guadalajara, Jalisco, México.

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