TNF and ankylosing spondylitis: Molnar Molnar C C Scherer Scherer A A Baraliakos Baraliakos X X TNF blockers inhibit spinal radiographic progression in ankylosing spondylitis by reducing disease activity: results from the Swiss Clinical Quality Management cohort TNF blockers inhibit spinal radiographic progression in ankylosing spondylitis by reducing disease activity: results from the Swiss Clinical Quality Management cohort Ann Rheum Dis Ann Rheum Dis 2017 2017 77 77 63 63 69 69 10.1136/ANNRHEUMDIS-2017-211544 10.1136/ANNRHEUMDIS-2017-211544 28939631 28939631