Rates of Malignancy Associated With Juvenile Idiopathic Arthritis and Its Treatment. - Beukelman, Timothy; Haynes, Kevin; Curtis, Jeffrey R.; Fenglong Xie; Lang Chen; Bemrich-Stolz, Christina J.; Delzell, Elizabeth; Saag, Kenneth G.; Solomon, Daniel H.; Lewis, James D. (Arthritis & Rheumatism, 2012)