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  1. Article

    Open Access

    A prospective study of androgen levels, hormone-related genes and risk of rheumatoid arthritis

    Rheumatoid arthritis (RA) is more common in females than males and sex steroid hormones may in part explain this difference. We conducted a case–control study nested within two prospective studies to determine...

    Elizabeth W Karlson, Lori B Chibnik, Monica McGrath in Arthritis Research & Therapy (2009)