Efficacy of etoricoxib for ankylosing spondylitis: A protocol for systematic review of randomized controlled trial.

Previous clinical trials have reported that etoricoxib has been utilized to treat ankylosing spondylitis (AS) effectively. However, no study systematically investigated the efficacy and safety of etoricoxib for patients with AS. In this systematic review, we will assess the efficacy and safety of etoricoxib for AS.