Number of joints affected at diagnosis in children with ALL and arthritis, systemic JIA and non-systemic JIA.

Number of joints affected at diagnosis in children with ALL and arthritis, systemic JIA and non-systemic JIA.急性淋巴细胞白血病（Acute Lymphoblastic Leukemia, ALL）合并关节炎患儿、全身型幼年特发性关节炎（systemic Juvenile Idiopathic Arthritis, sJIA）患儿及非全身型幼年特发性关节炎（non-systemic Juvenile Idiopathic Arthritis, nsJIA）患儿在确诊时的受累关节数目。