Dufour-Van den Goorbergh, C.M.

pregnancy level disease patient autoantibodie disease activity arthritis anti-ccp activity partum autoantibody change post partum study autoantibody levels disease course women flare post partum presence disease activity score flare response factor citrullinated course erasmus mc trimester b cells improvement analysis peptide anti-cyclic citrullinated peptide center rotterdam rotterdam igg-rf iga-rf rheum result c-reactive protein igm-rf antibody association geijn fe anticyclic citrullinated peptide responder protein anti-cyclic erasmu score material center baseline requirement geijn department cohort 3.3.2 delivery para study netherland response criteria criteria van gestel visit eular decline subclasse table man ya classification igm-rheumatoid factor duration disease duration pregnancyinduced amelioration university 118 patients autoantibody production report therapy arthritis res iu /ml