@article{articlea8ad0060,
title   = {Is measurement of IgM and IgA rheumatoid factors (RF) in juvenille rheumatoid arthritis clinically useful?},
author = {Ferreira, Rosa A. and Silva, Carlos H. M. and Silva, Deise A. O. and Sopelete, Monica C. and Kiss, Maria H. B. and Mineo, José R. and Ferriani, Virgínia Paes Leme},
year = {2007},
doi = {10.1007/s00296-006-0221-5},
journal   = {Rheumatology International}
}