Ringold, Sarah; Weiss, Pamela F.; Colbert, Robert A.; DeWitt, Esi Morgan; Lee, Tzielan; Onel, Karen; Prahalad, Sampath; Schneider, Rayfel; Shenoi, Susan; Vehe, Richard K.; Kimura, Yukiko; for the Juvenile Idiopathic Arthritis Research Committee of the Childhood Arthritis and Rheumatology Research...