Objective To investigate the circadian variation of serum interleukin 6 (IL 6) and cortisol and their clinical value in rheumatoidarthritis (RA) patients.
目的研究类风湿关节炎（RA）患者血清白细胞介素（IL） 6、皮质醇节律及其临床意义。
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Objective: To study the preliminary clinical application of serum pyridinoline cross-linked carboxy-terminal telopeptide of type I collagen(ICTP) detection in patients with rheumatoidarthritis(RA).