[NSAIDs and X-ray progression in AS].
D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use*; D018450:Disease Progression; D019317:Evidence-Based Medicine; D006801:Humans; D011859:Radiography; D013131:Spine / Q000000981:diagnostic imaging*; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging* / Q000188:drug therapy*; D016896:Treatment Outcome
D000894:Anti-Inflammatory Agents, Non-Steroidal