1. Radiological outcome in ankylosing spondylitis: use of the Stoke Ankylosing Spondylitis Spine Score (SASSS);Averns;British Journal of Rheumatology,1996
2. Measures to assess ankylosing spondylitis: taxonomy, review and recommendations;Bakker;Journal of Rheumatology,1993
3. Musculoskeletal Clinical Metrology;Bellamy,1993
4. The OMERACT filter for outcome measures in rheumatology;Boers;Journal of Rheumatology,1998
5. World Health Organization and International League of Associations for Rheumatology core endpoints for symptom modifying antirheumatic drugs in rheumatoid arthritis clinical trials;Boers;Journal of Rheumatology,1994