【作者(必填)】 Kneepkens EL, Krieckaert CL,
【文题(必填)】Lower etanercept levels are associated with high disease activity in ankylosing spondylitis patients at 24 weeks of follow-up.【年份(必填)】 Ann Rheum Dis.2014May 7. doi: 10.1136/annrheumdis--205213. [Epub ahead of print]
【全文链接或数据库名称(选填)】 http://www.ncbi.nlm.nih.gov/pubmed/24812290