Aim of the study: This study aims to explore the efficacy and safety of Feng Shi Gu Tong Wan in the treatment of ankylosing spondylitis. Materials and methods: This randomized, controlled, double-blinded, double-dummy trial enrolled patients with active ankylosing spondylitis defined as Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) ≥ 4 or …
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