Etanercept 50 mg once weekly is as effective as 25 mg twice weekly in patients with ankylosing spondylitis.
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Ann Rheum Dis. 2006 Dec;65(12):1572-7. doi: 10.1136/ard.2006.056747. Epub 2006 Sep 12.
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PMID: 16968715
Free PMC article.
Clinical Trial.