1)Hukuda S, Minami M, Saito T et al:Spondyloarthropathies in Japan:nationwide questionnaire survey performed by the Japan Ankylosing Spondylitis Society. J Rheumatol 28:554-559, 2001
2)Opremcak EM:Ankylosing Spondylitis. Uveitis:A clinical manual for ocular inflammation. Springer-Verlag New York, New York, 198-200, 1995
3)Stolwijk C, van Tubergen A, Castillo-Ortiz JD et al:Prevalence of extra-articular manifestations in patients with ankylosing spondylitis:a systematic review and meta-analysis. Ann Rheum Dis 74:65-73, 2015
4)Rudwaleit M, Baeten D:Ankylosing spondylitis and bowel disease. Best Pract Res Clin Rheumatol 20:451-471, 2006
5)Kiltz U, Baraliakos X, Karakostas P et al:Do patients with non-radiographic axial spondylarthritis differ from patients with ankylosing spondylitis? Arthritis Care Res(Hoboken) 64:1415-1422, 2012
6)Stolwijk C, Essers I, van Tubergen A et al:The epidemiology of extra-articular manifestations in ankylosing spondylitis:a population-based matched cohort study. Ann Rheum Dis 74:1373-1378, 2015
7)Kobayashi S, Kashiwagi T, Kimura J:Real-world effectiveness and safety of adalimumab for treatment of ankylosing spondylitis in Japan. Mod Rheumatol 29:1007-1012, 2019